• Man hiking with an Australian Shepherd riding forward-facing in the white K9 Sport Sack Knavigate dog carrier backpack
  • Front view of the K9 Sport Sack Knavigate dog carrier backpack in Lunar Rock, showing the collar enclosure and cinch straps
  • Back view of the Knavigate dog carrier backpack in Lunar Rock, showing the ergonomic shoulder straps and padded back panel
  • Angled view of the Knavigate dog carrier backpack in Lunar Rock with the shoulder straps and mesh side panel visible
  • Side profile of the Knavigate dog carrier backpack in Lunar Rock showing the lap belt and hip pocket
  • Man walking a trail with a dachshund riding in the white K9 Sport Sack Knavigate dog carrier backpack
  • Close-up of a hand pulling a leash out of the hip pocket on the Knavigate dog carrier backpack
  • Labelled diagram of the K9 Sport Sack Knavigate showing the collar enclosure, carabiner safety clip, angled cinch straps, mesh ventilation panels, pet lumbar straps, dog base, pockets, leg openings, shoulder straps, internal frame, padded back panel, sternum strap and lap belt
  • The five Knavigate sizes side by side, XS through XL, in Lunar Rock
  • Woman carrying a French bulldog in the black K9 Sport Sack Knavigate dog carrier backpack
  • Front view of the Knavigate dog carrier backpack in Midnight Black, showing the collar enclosure and cinch straps
  • Back view of the Knavigate dog carrier backpack in Midnight Black, showing the shoulder straps and padded back panel
  • Side view of the Knavigate dog carrier backpack in Midnight Black with the mesh ventilation panel and lap belt visible
  • The five Knavigate sizes side by side, XS through XL, in Midnight Black
  • Knavigate dog carrier backpack in Midnight Black with the top collar enclosure opened up
  • Close-up of a person fastening the padded lap belt on the Knavigate dog carrier backpack
  • Labelled diagram of the K9 Sport Sack Knavigate carrier showing every strap, panel and pocket
  • The five Knavigate carrier sizes lined up from XS to XL
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K9 Sport SackTravel Bags / Carriers

K9 Sport Sack Knavigate Dog Carrier Backpack with Frame, up to 50 lb

K9 Sport Sack Knavigate Dog Carrier Backpack with Frame, up to 50 lb

Keep going together - forward-facing carrier with an internal frame and hip belt, five sizes for dogs up to 50 lb

Model
Knavigate
Dog weight
Up to 50 lb
X-Small
9-12 in (23-30 cm)
Small
13-16 in (33-41 cm)
Size
Color

Size chart

Inches
SizeCollar to base of tail
X-Small9-12
Small13-16
Medium17-19
Large20-22
X-Large23-25

Size guide

Which size fits your dog?

Your dog's collar to base of tail —
Move the slider to your dog's collar to base of tail

Measurements

SizeCollar to base of tail
X-Small9-12 (23-30 cm)
Small13-16 (33-41 cm)
Medium17-19 (43-48 cm)
Large20-22 (51-56 cm)
X-Large23-25 (58-64 cm)

From the brand's own chart, measured on the dog — not the packaging.

How to measure

1 Neck 2 Chest
  1. Measure along your dog's spine from the collar to the base of the tail, not to the tip of the tail.
  2. Sizes are by length, not weight, and the Knavigate is for dogs up to 50 lb. If your dog is near the top of a size range, choose the larger size.

Why you’ll love it

Highlights
  • Your dog rides when the walk gets long
  • Internal frame and padded back panel
  • Lap belt puts the weight on your hips
  • Forward facing, with mesh side panels
  • Five sizes for dogs up to 50 lb
  • Measured collar to the base of the tail
  • Genuine K9 Sport Sack Knavigate

Your pick

X-Large (23"-25" from collar to base of tail) · Lunar Rock

4 interest-free payments of $47.49

FREE shipping on this item

Delivers in 6–9 business days

Estimated delivery

  1. Order today 
  2. Ships bywithin 1–2 days
  3. Arrives6–9 days
Returns
30-day returns
Support
Contact us
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Tracked shipping
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Quality picks

Summary

  • Internal Frame And Padded Back Panel The frame holds the pack's shape and the padded back panel sits against you, so the load does not hang off your shoulders.

  • Padded Lap Belt And Sternum Strap The lap belt moves the weight down onto your hips the way a hiking pack does, and the sternum strap keeps the shoulder straps from spreading.

  • Forward Facing, With Leg Openings Leg openings, angled cinch straps, pet lumbar straps and a collar enclosure hold your dog in position facing the way you are both going.

  • Carabiner Safety Clip A carabiner safety clip inside the pack gives you a second point of attachment.

  • Mesh Ventilation Panels Mesh panels run down both sides of the carrier to keep air moving around your dog.

  • Five Sizes, XS To XL Sized by length, not weight, for dogs up to 50 lb: 9 to 12, 13 to 16, 17 to 19, 20 to 22 and 23 to 25 inches from collar to the base of the tail.

  • Pockets Where You Can Reach Them A storage pocket, dual side pockets and two hip pockets, plus a VELCRO panel for a custom patch.

Product description

Why it's worth it

  • The real K9 Sport Sack® Knavigate: the maker's own dog carrier, with an internal frame and a padded hip belt that put your dog's weight on your hips, not your shoulders.
  • Built for comfort and safety: mesh panels down both sides for airflow, a sternum strap, a carabiner safety clip, and two hip pockets for your phone and leash.
  • 5 sizes, XS to XL: fits dogs 9–25" from collar to base of tail, up to 50 lb. Size by length, not weight.

Tracked shipping on every order and 30-day returns. Request a return within 30 days of delivery (unused, original packaging). Arrived damaged or wrong? Tell us within 7 days and we'll replace or refund it at no cost.

Every walk has a point where your dog is done and you are not. The puppy who ran too hard, the dachshund who should not be doing three more miles, the fourteen-year-old who still wants to come but cannot finish. The Knavigate is for that point: a forward-facing backpack carrier with an internal frame and a hip belt, so your dog rides and you keep going.

Man hiking with an Australian Shepherd riding forward-facing in the white K9 Sport Sack Knavigate dog carrier backpack
On the move, dog up front.

What you get

  • Internal frame and padded back panel, so the load sits on your skeleton rather than your shoulders
  • Ergonomic shoulder straps, a sternum strap and a padded lap belt with hip pockets
  • Leg openings and angled cinch straps to hold your dog in position
  • Pet lumbar straps and a collar enclosure
  • Carabiner safety clip
  • Mesh ventilation panels down both sides
  • A storage pocket, dual side pockets and two hip pockets
  • VELCRO® panel for a custom patch
  • Five sizes, XS to XL, for dogs 9 to 25 inches from collar to the base of the tail, up to 50 lb
  • Lunar Rock, Midnight Black or Dune

Every part of it, labelled

K9 Sport Sack builds the Knavigate from the features across the rest of their range, so there is more going on here than a bag with leg holes. This is the maker’s own diagram.

Labelled diagram of the K9 Sport Sack Knavigate showing the collar enclosure, carabiner safety clip, angled cinch straps, mesh ventilation panels, pet lumbar straps, dog base, storage and side pockets, leg openings, ergonomic shoulder straps, internal frame, padded back panel, sternum strap, hip pockets and lap belt
Front and side, with every part named.

Why the frame and the hip belt matter

A dog carried in a soft bag hangs off your shoulders, and twenty minutes in you feel it in your neck. The Knavigate has an internal frame and a padded back panel that hold the pack’s shape, and a lap belt that moves the weight down onto your hips the way a hiking pack does. The sternum strap stops the shoulder straps spreading. That combination is the difference between carrying your dog to the car and carrying your dog all afternoon.

Close-up of a person fastening the padded lap belt on the K9 Sport Sack Knavigate dog carrier backpack
Fastening the lap belt.

Who carries one

Hikers whose dog runs out of trail first. Small dogs and short-legged breeds cover the same ground at three times the effort. Carry them for the hard mile and let them walk the easy one.

Man walking a trail with a dachshund riding in the white K9 Sport Sack Knavigate dog carrier backpack
A dachshund on the trail, riding.

Short-legged and flat-faced breeds. Dachshunds, corgis, French bulldogs and pugs all have good reasons to stop early. Forward-facing means they can see where you are both going, and the mesh panels keep air moving.

Woman carrying a French bulldog in the black K9 Sport Sack Knavigate dog carrier backpack
Facing forward, where they can see.

Older dogs and dogs on the mend. A dog recovering from surgery, or one whose back legs have started to go, can still come along. Ask your vet first if your dog is under treatment.

Crowds, transit and travel. Stations, escalators, markets and festival crowds are easier when your dog is off the floor and your hands are free. The hip pockets hold a phone and a leash where you can reach them without taking the pack off.

Close-up of a hand pulling a leash out of the hip pocket on the K9 Sport Sack Knavigate dog carrier backpack
Leash out of the hip pocket, pack still on.

Getting the size right

This carrier is sized by your dog’s length, not their weight. Measure along the spine from the collar to the base of the tail, not to the tip. Then read the size off the size chart on this page. The Knavigate is built for dogs up to 50 lb. If your dog is near the top of a size range, or falls between two sizes, choose the larger one.

The five Knavigate sizes side by side, XS through XL, in Lunar Rock
XS through XL, side by side.

Before the first long trip

  • Let your dog get in and out of the pack at home before you go anywhere in it.
  • Load it, clip the lap belt, then adjust the shoulder straps so the weight sits on your hips.
  • Check the straps, buckles, zippers and the carabiner clip before every use.
  • Stop regularly so your dog can get out, stretch, drink and walk.
  • Wipe the fabric with a damp cloth and let it air dry. Store it somewhere dry.

Looking for something else to carry them in?

Who it’s for

Sized by your dog's length from collar to the base of the tail, 9 to 25 in across five sizes, for dogs up to 50 lb.

  • Hikers whose dog runs out of trail before they do
  • Short-legged and flat-faced breeds - dachshunds, corgis, French bulldogs, pugs
  • Older dogs who still want to come along for the whole walk
  • Dogs on the mend who are cleared by a vet to travel
  • Crowds, stations and travel days when hands free is easier
  • Owners who want the weight on their hips rather than their shoulders

What’s included in the box

  • 1 K9 Sport Sack Knavigate backpack dog carrier

Pairs well with

Total for

$3.99 shipping, free on orders of $50 or more.

Everything you’d want to check

Most asked questions

Typing searches the answers below · Ask Simi opens live chat with your question

How do I measure my dog for this carrier?
Measure along the spine from the collar to the base of the tail, not to the tip of the tail. Then read the size off the chart: XS 9 to 12 in, S 13 to 16 in, M 17 to 19 in, L 20 to 22 in, XL 23 to 25 in.

What is the weight limit?
K9 Sport Sack lists the Knavigate for dogs up to 50 lb. It is sized by your dog's length rather than their weight, so measure from the collar to the base of the tail and read the size off the chart. If your dog is near the top of a size range, choose the larger size.

What if my dog is between two sizes?
If your dog is near the top of a size range or between two sizes, choose the larger one. A long low dog such as a dachshund usually fits the size its measurement lands in.

Does my dog face forwards or backwards?
Forwards. Your dog rides facing the same way you are walking, with their legs through the leg openings and their head out of the top.

How does the weight sit on me?
An internal frame and a padded back panel hold the pack against your back, and the padded lap belt transfers the load onto your hips. A sternum strap keeps the shoulder straps in place.

What colors does it come in?
Lunar Rock, Midnight Black and Dune.

What pockets does it have?
A storage pocket, dual side pockets and two hip pockets. There is also a VELCRO panel on the front for a custom patch.

Can I use it for an older dog or one recovering from surgery?
Many people do, and it is one of the main reasons to own one. If your dog is under veterinary treatment, check with your vet first that being carried in this position is suitable.

How do I clean it?
Wipe the fabric with a damp cloth and let it air dry completely. Avoid harsh chemical cleaners, and store it somewhere dry.

How do I get my dog used to it?
Let them get in and out of the pack at home first, with treats, before you wear it anywhere. Build up to short walks before a long day out.

What is in the box?
One K9 Sport Sack Knavigate backpack dog carrier. Patches are not included.

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How to use this product

  1. Measure your dog: Measure along the spine from the collar to the base of the tail, then pick the size from the chart (XS 9-12 in through XL 23-25 in).

  2. Load and clip in: Have your dog step in with their legs through the leg openings, close the collar enclosure, attach the carabiner safety clip and snug the angled cinch straps.

  3. Set the pack on your hips: Fasten the padded lap belt first and let it take the weight, then tighten the shoulder straps and clip the sternum strap.

Worth knowing

  • Sizing is by length, not weight. K9 Sport Sack lists the Knavigate for dogs up to 50 lb.
  • Introduce the carrier at home before the first trip out, and stop regularly so your dog can stretch, drink and walk.

Product care and maintenance

  • Spot cleaning: Wipe the fabric surface with a damp cloth to clean off dust and dirt. Avoid using harsh chemical cleaners and allow the backpack to air dry completely.

  • Pre-trip inspection: Inspect the straps, buckles, zippers, and internal frame before every use. Ensure all closures are fully functional and secure before placing your dog inside.

  • Proper storage: Store the carrier in a dry, cool place when it is not in use. Avoid keeping it in damp environments to maintain the integrity of the fabric and frame.

What to expect when you order

  1. You orderYou get a confirmation email straight away with everything you bought.
  2. We prepare itOnce your payment clears we get your order ready for dispatch.
  3. It ships with trackingWe email you the tracking number as soon as the carrier scans the parcel.
  4. It arrivesTracked all the way to your door, and we email your tracking number as soon as it ships. Damaged or wrong? We replace it free.