THE WORLD'S BEST BIG DOG

BACKPACK CARRIER

Newly redesigned, the Kolossus is THE big dog backpack carrier that also doubles as a backpacking pack. Ideal for carrying medium to large dogs with top of the line technologies in pet and human safety and comfort.

PERFECT FOR

BIKING

SKATING

HIKING

COMMUTING

WHO’S IT FOR?

The big-dog adventurer — the dog parent who refuses to leave big guy behind, whether tackling rugged backcountry trails, open-road rides, or mountain summits.

Why You'll Love It

2-in-1 Trail Versatility

2-in-1 Trail Versatility

Converts seamlessly from a heavy-duty dog carrier into a 60L backpacking pack with removable storage.

All-Weather Security

All-Weather Security

Engineered with an internal frame, adjustable torso height, and a padded lumbar belt so you can carry heavy loads longer without the back strain.

big dogs. big adventures.

big dogs. big adventures.

Built for bigger pups, the Kolossus helps you bring your best friend along for the ride. Because adventures are better together, no matter how big your dog is.

More Happy Together

C.

I got this pack to have as a precaution, as my senior GSP Olive has deteriorating hips and has been struggling to get through our longer hikes, but I couldn’t imagine leaving her home. She has always been trusting and laid back, but I did not expect her to be as comfortable as she was on our first longer session in it.

C.

We love our K9 bag! We recently got a puppy and at 5mths old we were heading on a trip wanting to do a lot of hiking and didn’t want to leave anyone behind. We found this bag, ordered what we thought would be the best for her breed/size totally guesstimating (seberian husky) went with Kolossus. Rolled up a towel and stuffed it in the bottom to make it fit while she grows.

Patricia Loeppky

We enjoy every bit of this backpack. Ride a grom and my gs rides in the back with the goggles. Huge fans of the backpack. Designed really well and durable. Makes life more unique

Matthew Finn

What an amazing backpack! Love how cool it looks like, lightweight and high quality. Thank you!!!

Rolandas
A woman riding a light blue bicycle on a residential street with mountains and houses in the background. A small white dog is sitting on her back in a pet carrier backpack.

Introducing: the Kompanion

Check It Out
French Bulldog riding a motorcycle, used as the visual for the K9 Sport Sack sizing quiz

What size bag fits your dog?

Take The Quiz