FREE UK shipping for orders over £30, Europe over £60 & Worldwide over £120

K9 Sport Sack Knavigate 

*Please note: sizes Medium (Black & Grey), Large (Black & Grey) and Extra Large (Black & Grey) are out of stock with K9 Sport Sack until approximately late June 2021 so we are unable to re-stock until then. In the meantime we have a very small number of some sizes/colours left in stock or a different version of K9 Sport Sack, such as the Plus 2 or Rover 2 may be an option depending on your needs. Finally a larger size, with booster blocks could be an alternative. If you are unsure or need a hand with choosing a version or size, please contact us as we’re always happy to help!

"No dog left behind" with the brand new K9 Sport Sack Knavigate. The newly upgraded dog carrier backpack from K9 Sport Sack has introduced extra support wrapped around your midsection to reduce the load on your shoulders as well as additional storage and a new unique internal frame to ensure optimum comfort and security for a range of owners and dog's alike.

The Knavigate dog carrier backpack has been specially made for the longest and most strenuous adventures, so you can take your dog with you to explore the world together. If you are the type who loves a multitude of long-distance adventures such as hikes, mountain climbs and bike rides then you can finally be accompanied by your companion (small-large) by carrying them in your K9 Knavigate backpack!

The ultimate K9 dog carrier backpack for hiking!

Why this is great for adventures:


Features of The K9 Sport Sack Knavigate

The Knavigate is a combination of all the best features from K9 Sport Sack's backpack dog carriers. Available in the widest range of sizes, XS-XL, this carrier works for small through to large dogs. Each size is equipped with an internal frame as well as a padded hip belt to comfortably support more dogs/owners of all body types. The Knavigate was made for the most avid adventurers and allows for longer, more strenuous activities with your dog.

K9 Sport Sack Knavigate features: 
- Lap belt on all sizes
- Hip pockets
- Storage pocket extends underneath the pet base to bottom of frame
- Lumbar support straps for dog
- Sizing from XS-XL

Features included as standard on all K9 Sport Sack dog backpack carriers:
- Carabiner to clip to your dog's collar
- No-slip zipper to support your dog's back
- Angled side cinch straps to keep your dog in a forward position
- Collar enclosure to keep your dog safe inside the bag
- Side ventilation for breathability
- Zipper loop to secure the main zipper to the collar enclosure 

K9 sport sack Knavigate features 

Sizing & Specs

K9 Sport Sack Knavigate Specs

50 lb (23 kg) weight limit

Sizing: Length - Measure from dogs collar to the base of their tail. Girth - Measure the widest part of your dog's chest. 
If you find your dog is between sizes and still growing (perhaps you would like to opt for a bigger size backpack to last) or your dog's breed is short legged/long bodied then we can help. We stock a range of K9 booster blocks that add a 3" lift to the backpacks. Please contact us at or on our live chat between 7am and 8pm if you need any help with sizing.




Common Breeds

Extra Small 10 - 13" / 25 - 33 cm Up to 23" / 58 cm Chihuahua, Pomeranian, Teacup Yorkie
Small 13 - 17" / 33 - 43 cm Up to 27" / 69 cm Mini Dachshund, Cavalier King Charles
Medium 17 - 20" / 43 - 51 cm Up to 28" / 71 cm Jack Russel, Pug, Havanese
Large 20 - 23" / 51 - 58 cm Up to 31" / 79 cm French Bulldog, Corgi, Beagle
Extra Large 23 - 26" / 58 - 66 cm Up to 37" / 94 cm Boxer, Collie, Whippet, Husky

All K9 Sport Sack carriers are specially developed under the close direction of animal professionals, veterinarians, dog trainers, and outdoor product engineers to be ergonomic, safe, and strong. Do not use any of the K9 backpacks with dogs who have injuries or disabilities that could be further exacerbated. 

Shipping Policy


We ship nationally and internationally to customers all over the world daily via Royal Mail courier services, based upon order weight and destination. We will always ensure you know the cost of postage before you are asked for any payment information which means you will always have the option to choose your preferred delivery speed and related charge per order.


Throughout the shipping process our responsive customer service team work directly with our couriers and are always available to assist you directly, therefore ensuring a reliable service with high satisfaction rates.


Before placing an order, please ensure you have read our full shipping policy below and reach out to us at if you have any queries.


Coronavirus Update: Due to current events, we would recommend a tracked service is selected. We are continuing to process and dispatch our orders on time however due to the pandemic there may be delays experienced throughout postal networks, both nationally and internationally (especially at the customs stage). We will do everything we can to work with our couriers and ensure as fast a service as possible, but during this time are unable to guarantee usual shipment time frames and delivery windows. More can be found on our Covid policy here.


- We fulfil and ship orders daily, Monday-Saturday excluding bank holidays.

- Our same-day dispatch* cut-off time is 11:30am UK time.

- All shipping timelines provided are delivery aims unless otherwise stated.

- We offer free standard delivery for spends over £30 within the UK, over £60 across Europe and over £120 worldwide.

- Basic shipping estimates (average parcel weight 250g-1500g):

2nd Class/Economy £3.25 £7-£12 £7-£13
Standard  £4.00 £9-£13 £16-£29
Tracked  £5.75 £10-£15 £18-£30


- You must ensure the correct address format and contact details are provided to us at the time of order and that you are not purchasing restricted items for the destination country to aid with prompt delivery.

- You as the customer are responsible for your own countries customs duties and taxes charged at the time of customs release, delivery, or collection.

- In the case of failed delivery due to incorrect address information or contact details being provided, customs duties not being paid, or restricted items being purchased, no shipping refunds and/or compensation can be provided.



When do we ship?
We fulfil and ship orders daily from 7am-8pm, 7 days a week excluding bank holidays. Although we fulfil and ship across the full week, please note we have a guaranteed same-day dispatch cut off time (below) plus some couriers and manufacturers/suppliers have fluctuating non-postal days, such as weekends. For example, Royal Mail may receive your parcel on a Sunday, but will not necessarily process it for delivery until the following Monday or next working day.


Same day dispatch*
Order before 11:30am UK time for guaranteed same-day dispatch. Orders made after 11:30am UK time may be shipped the same day where possible, but we cannot guarantee this. Our same day despatch does not include personalised items such as pet tags, pre-order/backorder items or items which require shipment directly from the manufacturer or supplier. Orders including the above may be placed on-hold or shipped separately.


Pre-order and backorder items
Sometimes we list items as out of stock, but available on pre-order or backorder. This allows you to have a first look at what's due to arrive to us, snap up something you might be waiting for or place a direct order for a specific item you can't find anywhere else. Upon a pre-order item or backorder item being purchased, the order is placed on-hold until the item arrives to us and the order is then shipped ASAP. Updates will be provided along the way including the estimation and as always, confirmation will be sent once the item has shipped. Further information on pre-order and backorder items can be found here.


Shipping timelines
All shipment timelines provided within this policy are delivery aims unless otherwise stated as guaranteed. When there are scenarios outside of our or our couriers’ control such as national and international bank holidays, adverse weather conditions or country-wide border changes there may be a risk of delays in delivery to the destination.


Free delivery bands*:
Once the minimum order spend has been met for the country you require shipment too, the free delivery band will become available in your basket.
These bands are:
UK – Spend over £30 to receive free standard UK delivery (2-3 days)
Europe – Spend over £60 (or European currency equivalent) to receive free European Delivery (5-10 days)
Outside of Europe – Spend over £120 (or worldwide currency equivalent) to receive free Worldwide Delivery (5-15 days)


*Same day dispatch and free delivery is not currently available on Animalarm, Ruff&Tumble drying coats, Petsports (Outside of the US), Canine&Co Christmas pet jumpers and may exclude bulky/heavy items, out of stock items/pre-orders or items which require shipment directly from the manufacturer. When additional charges are required (such as for the above products) these will be displayed in the basket at the shipping calculation stage. All items which require a separate delivery charge will still count towards the free delivery bands but may add a 3-5 day delay to the order despatch date.
Travfurler Ltd reserve the right to amend or cancel these bands at any given time.


Shipping calculations & charges
Estimates can be found within this policy (at the bottom), however due to the calculations required around weight and delivery address, the most accurate place to check is the shipping calculation stage within checkout (add your items to basket, input your address and the delivery charges will automatically update allowing you to select your preferred method).


Address formats, contact details & restricted Items
You must ensure the correct address format and contact details are provided to us at the time of order and that you are not purchasing restricted items for the destination country. We will always endeavour to check for potential issues; however, we cannot be held responsible for incorrect address data, incorrect contact details or restricted items being purchased. Should one of these scenarios occur, there will be no refund or compensation provided for shipping costs (original, return and/or re-posts) nor for scenarios where customs may dispose of parcels. The best way to check you are meeting the destination countries shipping guidelines is to check the relevant shipping guide found here: Country guides.


Customs duties & taxes
Since we have no control over country border charges, we are unable to estimate customs duties and taxes within our product or shipping pricing currently. Therefore, you as the customer are responsible for your own countries customs duties and taxes charged at the time of customs release, delivery, or collection. Please bear this in mind when placing international orders. If you are unsure on whether you will be subject to customs fees, we would recommend contacting your local customs office for more information before placing your order. If you choose to refuse the customs fees and the parcel is returned to us, the shipping costs will not be refunded, and a handling fee may be deducted from your refund.
National Customs Websites can be found here for information purposes. 


Shipping breakdown:  


UK Delivery Options


FREE UK Delivery (2-3 days) - spend over £30 (or local currency equivalent)


Tracked Next Working Day Delivery Aim:

UK Tracked Next Working Day 0g-50g £4.25
UK Tracked Next Working Day 51g-1000g £5.75
UK Tracked Next Working Day 1001g-2000g £8.00
UK Tracked Next Working Day 2001g and up £18.25


Tracked 48 Hour Delivery Aim:

UK Tracked 48 Hour 0g-50g £3.75
UK Tracked 48 Hour 51g-2000g £5.00
UK Tracked 48 Hour 2001g and up £10.75


First Class 1-2 days Delivery Aim (Non-Tracked):

UK First Class 1-2 days 0g-50g £1.00
UK First Class 1-2 days 51g-1000g £4.00
UK First Class 1-2 days 1001g-2000g £5.75
UK First Class 1-2 days 2001g and up £16.00

Second Class - 3 days Delivery Aim (Non-Tracked):

UK Second Class 3 days 0g-50g £0.75
UK Second Class 3 days 51g-2000g £3.25
UK Second Class 3 days 2001g and up £9.00


Europe Delivery Options


FREE European Delivery (5-10 days) - spend over £60 (or local currency equivalent)


Europe Tracked 3-5 days Delivery Aim:

Europe Tracked 3-5 days 0g-50g £7.00
Europe Tracked 3-5 days 51g-100g £10.00
Europe Tracked 3-5 days 101g-250g £10.25
Europe Tracked 3-5 days 251g-500g £11.75
Europe Tracked 3-5 days 501g-750g £12.75
Europe Tracked 3-5 days 751g-1000g £13.75
Europe Tracked 3-5 days 1001g-1250g £14.00
Europe Tracked 3-5 days 1251g-1500g £14.75
Europe Tracked 3-5 days 1501g-2000g £15.25
Europe Tracked 3-5 days 2001g and up £35.00

Europe Standard 3-5 days Delivery Aim (Non-Tracked):

Europe Standard 3-5 days 0g-50g £2.00
Europe Standard 3-5 days 51g-100g £5.75
Europe Standard 3-5 days 101g-250g £6.00
Europe Standard 3-5 days 251g-500g £7.75
Europe Standard 3-5 days 501g-750g £9.00
Europe Standard 3-5 days 751g-1000g £10.00
Europe Standard 3-5 days 1001g-1250g £11.00
Europe Standard 3-5 days 1251g-1500g £12.00
Europe Standard 3-5 days 1501g-2000g £13.00
Europe Standard 3-5 days 2001g and up £28.00



Europe Economy 2-5 weeks Delivery Aim (Non-Tracked):

Europe Economy 2-5 weeks 0g-50g £3.25
Europe Economy 2-5 weeks 51g-100g £5.00
Europe Economy 2-5 weeks 101g-250g £5.50
Europe Economy 2-5 weeks 251g-500g £7.80
Europe Economy 2-5 weeks 501g-750g £9.00
Europe Economy 2-5 weeks 751g-1000g £9.75
Europe Economy 2-5 weeks 1001g-1250g £10.80
Europe Economy 2-5 weeks 1251g-1500g £12.00
Europe Economy 2-5 weeks 1501g-1750g £13.00
Europe Economy 2-5 weeks 1751g-2000g £13.20
Europe Economy 2-5 weeks 2001g and up £22.50


Other International Delivery


FREE worldwide tracked delivery (5-15 days) - spend over £120 (or local currency equivalent)


Worldwide Tracked 5-7 days Delivery Aim:

Worldwide Tracked 5-7 days 0g-50g £9.75
Worldwide Tracked 5-7 days 51g-100g £12.75
Worldwide Tracked 5-7 days 101g-250g £14.00
Worldwide Tracked 5-7 days 251g-500g £18.50
Worldwide Tracked 5-7 days 501g-750g £21.25
Worldwide Tracked 5-7 days 751g-1000g £24.50
Worldwide Tracked 5-7 days 1001g-1250g £26.75
Worldwide Tracked 5-7 days 1251g-1500g £29.25
Worldwide Tracked 5-7 days 1501g-2000g £31.00
Worldwide Tracked 5-7 days 2001g and up £42.00

Worldwide Standard 7 days Delivery Aim (Non-Tracked):

Worldwide Standard 7 days 0g-50g £3.00
Worldwide Standard 7 days 51g-100g £9.00
Worldwide Standard 7 days 101g-250g £10.50
Worldwide Standard 7 days 251g-500g £16.50
Worldwide Standard 7 days 501g-750g £19.00
Worldwide Standard 7 days 751g-1000g £23.00
Worldwide Standard 7 days 1001g-1250g £26.25
Worldwide Standard 7 days 1251g-1500g £29.00
Worldwide Standard 7 days 1501g-2000g £30.25
Worldwide Standard 7 days 2001g and up £35.00



Worldwide Economy 6-12 weeks Delivery Aim (Non-Tracked):

Worldwide Economy 6-12 weeks 0g-50g £3.25
Worldwide Economy 6-12 weeks 51g-100g £5.00
Worldwide Economy 6-12 weeks 101g-250g £5.50
Worldwide Economy 6-12 weeks 251g-500g £7.75
Worldwide Economy 6-12 weeks 501g-750g £9.00
Worldwide Economy 6-12 weeks 751g-1000g £9.75
Worldwide Economy 6-12 weeks 1001g-1250g £10.75
Worldwide Economy 6-12 weeks 1251g-1500g £12.00
Worldwide Economy 6-12 weeks 1501g-1750g £13.00
Worldwide Economy 6-12 weeks 1751g-2000g £13.25
Worldwide Economy 6-12 weeks 2001g and up £28.00


Before placing an order, please ensure you have read our full shipping policy above and reach out to us at if you have any queries.


Refund Policy


Returns, Exchanges & Refund Policy


Whilst we hope you are happy with every purchase made at Travfurler, should you wish to return an item purchased from us, we will be happy to refund the cost of the item or offer an exchange. To apply for a return/refund please ensure you have read the full return, exchange and refund policy detailed below then contact us ( to begin the process.


- We offer a 30 day returns policy from the date of purchase (365 days for faulty or defective items).
- Within this timeframe returns can be processed for refunds and exchanges.
- Unless returning an incorrect, faulty, or damaged upon arrival item, your item must be unused (free from pet hair) and fit for re-sale. Including original packaging and in the same condition you received it.
- The approval and outcome of each return depends on the individual circumstances as listed within this policy.
- If the product returned is not in a fully resalable condition or the packaging is damaged, we reserve the right to refuse a refund on the item or offer a partial refund. This does not affect your statutory rights and excludes incorrect, faulty, or damaged upon arrival items.
- All refunds will be processed using the same method of payment used to place the order.
- All UK exchanges will be re dispatched with free delivery.
- We are not able to offer returns/refunds/exchanges on gift cards, sale items and perishable goods. As well as personalised, custom, or bespoke products unless incorrect, faulty, or damaged upon arrival.
- Postage charges are non-refundable and will be deducted from your refund. A refund of the original delivery charge and charge for returning will only be given in the case of incorrect, damaged upon arrival or faulty goods. 

Partial Refunds

There are certain situations where returns may be refused or only partial refunds or gift vouchers are granted:
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error upon arrival back to us
- Returns made 30 days after the date of purchase (excluding faulty or defective items)
- Sale items

Replacements & Exchanges
We work hard to ensure our products are of the highest quality, but on the rare occasion something goes wrong we will do everything we can to put it right. If an item is damaged upon arrival, faulty or defective we can either send out a brand-new replacement or provide a full refund. To process a replacement or full refund we will require a receipt or proof of purchase and evidence of the defect/damage.

If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return (excluding original shipping costs). Once the returned item is received, a gift certificate will be mailed to you. If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send the refund to the gift giver.

Sale items

Only regular priced items may be refunded, unfortunately sale items cannot be refunded. Exchanges or gift vouchers may instead be reviewed on a case-by-case basis.  


Giftcards cannot be refunded.

Applying for a return/refund

To apply for a return/refund please ensure you have read the full return, exchange and refund policy detailed above then contact us ( to begin the process.
Once the request has been confirmed, you will need to:

- Pack the product in its original packaging.
- Pack the package to avoid damage during transit.
- Include a copy of your original delivery note or written details including your name, address, phone number, order number and details on the request including whether it is a refund or exchange request.
- Mail the item(s) to us at:
Travfurler Ltd, 103 Merryoak Road, Southampton, England, SO197QP
(Please do not send your purchase back to the manufacturer)
- You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable.
- If you are shipping an item over £30, we would recommend using a trackable/signed-for shipping service or purchasing shipping insurance. Since we cannot guarantee that we will receive your returned item.
- Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund or exchange.
- If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days (payment method dependant). Alternatively, your exchange will be despatched.
- If you receive a refund, the cost of original shipping will be deducted from your refund.
- If your return is rejected, we will provide details of the reason along with next steps and remedial actions.

Late or missing refunds 

If you have not received a refund yet but are due one following our approval, please first check your bank account.  
Then contact your debit/credit card company, since it may take some time before your refund is officially posted. 
If they are unable to help you will need to contact your bank since there is often some processing time before a refund is posted. 
Finally, if you have done all of this and you still have not received your refund yet, please contact us at so we can investigate.

If you have any questions around this policy, please reach out to us at


Preorders and Backorders

Sometimes we list items as out of stock, but available on preorder or backorder. This allows you to have a first look at what's due to arrive to us, snap up something you might be waiting for or place a direct order for a specific item you can't find anywhere else. The aim of this guide is to help explain the two terms and give an idea on timelines plus answer other frequently asked questions around these status'. 

Preorders (ETA: As per the due by (XX-XX-XX) date listed):
When an item is listed as 'COMING SOON! XX-XX-XX preorder', this item is on it's way to us and available to purchase on a preorder basis. This means you are able to purchase the item before it arrives to us, thus ensuring you are the first in line to receive it. The due by date is given as an approximation on when the item should arrive to us, thus giving an idea on when the item will ship onto you. Once the purchase is made, the order will be placed on-hold until the pre-ordered product arrives and can be shipped on (via the shipping method selected at checkout). 

Backorders (ETA: Usually 2-4 weeks):
When an item is listed as 'OUT OF STOCK! Available on backorder', this means the item will be added to our next order placed with the related supplier once your purchase is made. Which means you are able to purchase exactly the colour/size/style item you would like, even when out of stock. Usually this is a 2-4 week process however it is always best to check with us at before purchase for a more specific timeline since stock levels and frequencies fluctuate throughout the year. Once the purchase is made, the order will be placed on-hold until the back ordered product arrives and can be shipped on (via the shipping method selected at checkout). 

Our aim with offering these two services is to help us provide you with the exact products you want and love as well as making our processes as transparent as possible.

We hope this breakdown is useful, however if you do have any further questions please reach out to us as we're happy to help!