K9 Sport Sack Trainer – Large, Harbor Blue – Ideal for Dogs with 20-22” Back Length – Backpack-Style Training Carrier – Meant for Quick, Non-Strenuous Activities
$64.95
Price: $64.95
(as of Mar 03, 2026 22:48:04 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!
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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
✔
✔
✔
✔
✔
✔
✔
TRAINING CARRIER – Designed with a minimal frame & breathable mesh siding, the Trainer is the perfect way to introduce your small dog and/or puppy to backpacks. It will fit most comfortably on dog owners with small to medium builds.
FIND THE RIGHT SIZE – The Large is best for dogs with a length of 20-22” from collar to the base of the tail. Typical dog breeds that will fit this size backpack include Australian Shepherd, Small Labradoodle, Border Collie, Brittany & Terrier.
FOR CASUAL, SHORT-TERM USE – In addition to early-stage training, this carrier is great for quick, everyday outings when walking them doesn’t work—commuting, cycling, vet trips, a quick walk on hot pavement, or maybe just when they get tired.
SAFETY – Even though it’s only a temporary solution, the Trainer still comes with all our standard safety features, so you can count on the quality & peace of mind you enjoy with any other K9 Sport Sack purchase.
COMFORT & MOBILITY – This ultra-lightweight backpack features a simplified design that ensures easy on/off use, an ergonomic structure to promote weight distribution, ventilated side panels, a lumbar support strap, and padded shoulder straps.
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