K9 Sport Sack Kolossus – X-Large, Myrtle Green – The Big Dog Backpack – Ideal for Dogs 23-25” Long – Fully Adjustable Pet Carrier – Doubles as a Professional-Grade 60L Hiking Pack

Price: $264.95
(as of Mar 04, 2026 13:11:09 UTC – Details)

Product description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. How to measure your dog Merchant Video

How To Use – Getting Your Dog In STEP 1

Have your dog sit on top or to the side of the opened backpack.

STEP 2

Place front paws through the leg openings, clip the carabiner to the collar/harness, then secure the collar enclosure.

STEP 3

Zip the bag and thread the buckle through the zipper loop. Tighten lumbar and shoulder straps as snug as possible.

STEP 4

Adjust and buckle the sternum strap and waist buckle if needed. Enjoy the Ride!

Carriers

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Customer Reviews

4.2 out of 5 stars 1,209

4.3 out of 5 stars 29

4.4 out of 5 stars 548

4.3 out of 5 stars 192

4.3 out of 5 stars 2,143

4.2 out of 5 stars 453

4.2 out of 5 stars 163

Price

$46.56$46.56

$199.95$199.95

$79.95$79.95

$99.95$99.95

$94.95$94.95

$174.95$174.95

$264.95$264.95

Weight Capacity

15 lbs maximum

30 lbs maximum

25 lbs maximum

35 lbs maximum

35 lbs maximum

50 lbs maximum

80 lbs maximum

Functionality

Training & daily use

Airline approved carrier

Walks, hikes & bike rides

Dog and human use

Heavy and strenuous activities

Made for all environments

Made for all environments

Ideal For

Smaller breeds

Small to med. size breeds

Small to med. size breeds

Small to med. size breeds

Small to med. size breeds

Small through large dogs

Medium to large dogs

Available Sizes

XS, S, M, L

XS, S, M

XS, S, M, L

XS, S, M, L

S, M, L

XS, S, M, L, XL

L, XL, XXL

Breathable Material

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Product Dimensions ‏ : ‎ 12 x 11 x 27 inches; 4.5 Pounds
Item model number ‏ : ‎ ROV2-GRN-XL
Department ‏ : ‎ unisex-adult
Date First Available ‏ : ‎ February 16, 2021
Manufacturer ‏ : ‎ K9 Sport Sack
ASIN ‏ : ‎ B08WRMMTR3
Best Sellers Rank: #59,182 in Pet Supplies (See Top 100 in Pet Supplies) #123 in Dog Carrier Backpacks
Customer Reviews: 4.2 4.2 out of 5 stars (163) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
DOG CARRIER + HIKING PACK – When you’re not carrying your four-legged friend, Kolossus doubles as a professional-grade hiking pack with 60L of storage. Whether you’re heading into the wild or taking on city streets, you’ll be ready for adventure!
FIND THE RIGHT SIZE – The X-Large is best for dogs with a length of 23-25” from collar to the base of the tail. Typical dog breeds that will fit this size backpack include Doberman, Golden Retriever, Husky, Boxer, Standard Poodle & Vizsla.
MAXIMUM COMFORT – This backpack carrier is engineered for ultimate comfort, with adjustable shoulder and torso sizing to match any body type, an internal aluminum frame for support, a padded back panel, and a padded waist belt.
AMPLE STORAGE – Kolossus features a removable storage bag, two side pockets for water bottles, a large pocket at the base & a waste bag dispenser in the hip belt. Gear loops on the bottom of the carrier can be used to attach additional loose items.
MADE TO LAST – Thanks to premium materials and advanced construction, our design is built for long-term, rugged use—so you and your pup can enjoy it for years to come!