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The KOLOSSUS is THE backpack for large dogs, transformable into a hiking backpack. Available in sizes L, XL, and XXL, it is ideal for carrying medium to large dogs, up to 36 kg.
The Kolossus technology is high-end in terms of safety and comfort for both animals and humans. The adjustable shoulder and torso straps make this backpack more suited than ever to all body types (as long as you can bear the weight). When you're not carrying your four-legged friend, the backpack transforms easily to carry your gear with up to 60 liters of space.
Use this backpack for intense hikes, bike rides, and public transportation.
Hiking: for delicate paths or to relieve your dog on long stretches,
Bike, skateboard: to avoid excessive effort for your dog while covering more miles,
Public transport: to take your dog everywhere, regardless of its size,
City: to keep your dog with you in stores.
This backpack is meant to stay close to your best canine friend. The K9 Sport Sack® backpacks are not designed to prevent your dog from running or exercising. They are meant to give your dog a necessary break during a hike or bike ride.
The backpacks allow you to take your dogs or even cats on adventures and to places you never thought possible. Either way, remember to take breaks during hikes or bike sessions, so your dog can lie down on the ground, cool off, in the shade, and hydrate regularly in small amounts.
Watch the videos of the Kolossus backpack by K9 Sport Sack in our other tabs, as well as the "Health and Safety" and "Use" tabs.
K9 Sport Sack guarantees the quality of every product we sell. Every product has undergone research, development, and rigorous testing to ensure safe use for you and your dog. We understand that pets can be tough on things, and K9 Sport Sack strives to make products that last and withstand all dog types/personality.
If you have a warranty request, please fill out the warranty form on this page, and the K9 Sport Sack team will review it within 24 to 48 hours. If your product is deemed eligible for their K9 Ruff & Tuff warranty, one or more new products will be issued so that you and your dog can return to your adventures!
* For any other questions about our warranty, please refer to our FAQ page here.
Data sheet
Specific References
Introducing the KOLOSSUS Large Dog Backpack.
See more details in the video about the KOLOSSUS large dog carrier backpack from K9 Sport Sack.
How do I train my dog to travel in the KOLOSSUS large dog carrier.
Also see the "USAGE" tab for more information on the different steps.
Each K9 Sport Sack Dog Backpack has been carefully designed under the guidance of several veterinarians and dog professionals, and the carrier designs are patented. Since every dog is different in terms of weight, morphology, current health status and other distinguishing factors, to ensure that the K9 Sport Sack Dog Backpack is suitable for your dog, here is the brand's health and safety information.
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FAQ: What if my dog has pre-existing health conditions?
FAQ: Are K9 Sport Sack Backpacks Safe to Use?
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Look in the "TRAIN MY DOG" tab how to teach your dog to enter the backpack. Steps:
Check out the "TRAIN MY DOG" tab if you need to put the bag on by yourself. Maximize your comfort and that of your pet by wearing the bag the right way:
What should I buy for my puppy?
Most people go for these two options:
Why is the carrier so low on my back?
Pull on both shoulder straps to lift your bag. If you are with another person, ask them to gently lift the base of the bag while you lift the straps onto your back.
Your dog should be able to see over your shoulders and put his paws on them.
If all of these steps have been completed correctly and your dog is still sitting down in the carrier, contact K9 Sport Sack at info@k9sportsack.com for further assistance.
Why does my dog lean back?
Some dogs really enjoy leaning into the K9 Sport Sack. This is completely normal and natural.
Make sure you have properly tightened the neck strap of the bag around your dog's neck and the side straps, for the helpto stay well forward against your back.
The Plus 2 has a modified design of the side cinch straps and neck strap to ensure this problem is solved.
Why does my dog put his front legs back in the carrier?
If you have chosen the right size bag and are wearing it correctly, your dog may choose to put his paws back inside the bag without any problem.
On the other hand, if the bag is too big, the holes for your dog's paws will be too wide and your canine companion will not be properly installed. Exchange your bag for a bag that is the right size or purchase a booster block to raise your dog up in the bag.
Also remember to check that the neck strap is tight enough around your dog's neck and that the carabiner is securely attached to your dog's harness.
Why do the bag straps dig into my armpits?
This usually happens when your dog is sitting too low on your back. Review the first FAQ on how to properly fit the pack on your back or watch the video. This will distribute the weight more evenly.
To relieve the pressure, grab the strap of both shoulder straps and pull down. If you have another person with you, have them lift the base of the pack to help you do this.
Also tighten the chest clip and hip belt to properly position the pack against you.
How do I know if I have the right size backpack?
Make sure your dog is sitting in the bag and not standing. At first, he will probably stand, but as he gets used to it, he will sit.
Once your dog is settled in, a clear indicator of the wrong size is where your dog's collar is in relation to the bag: if it sticks out more than 6 inches, the bag is too small. If your dog seems low and "drowned" in the bag, it is too big.
If the size of the bag is too big for you,is suitable in terms of space for your personal belongings, it is better to buy a booster block that will raise your dog in your current bag rather than having to exchange it.
Why does my dog not want to fit in the backpack?
This usually happens when training to use the bag was rushed or the wrong training method was used.
Make sure to start with the dog's front legs rather than his butt. Watch the video in our other tabs.
Use treats, praise, and petting, as well as patience, to help your dog get used to the carrier backpack.
If your training location is too distracting, move your dog to a quiet area and work your way up, taking your time day by day over several weeks to help your dog associate the carrier with a positive experience. There's no need to rush things. Use the 3D method and positive reinforcement to train your dog. Learn here how to break down behavior into positive dog training so you can truly take steps to train your dog.
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