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K9 Sport Sack® Trainer


The Trainer is an affordable, easy to use, entry-level backpack dog carrier. Available in sizes XS-L, it is ideal for smaller breeds, dogs that are still growing, training, and learning to socialize. Available in a variety of bright color options, the trainer should be used for short, non-strenuous activities like short walks, hikes, bicycle rides, public transportation, and other similar activities. This carrier fits most comfortably on dog owners with a small to medium build.

For Dogs Ranging 4-30 lbs (2-13 kgs)

Trainer sizing: XS 10-13 inches, S 13-17 inches, M 17-20 inches, L 20-23 inches

View More Sizing Instruction

  • Lumbar Support Strap (not included on size XS)
  • Ventilated Side Panels
  • Wide Base to accommodate your pet and its tail
  • Side Water Bottle Pocket
  • Padded Shoulder Straps
  • Side Cinch Straps
  • Unique color options

Compare K9 Sport Sack Carriers

K9 Sport Sack® Trainer Comparison

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All K9 Sport Sack carriers are specially developed under the close direction of animal professionals, veterinarians, dog trainers, and outdoor product engineers to be ergonomic, safe, and strong.

Customer Reviews

Based on 178 reviews
Chewy Martinez @chewysmegasaga
Heaven product for Megaesophagus Dog

I have a dog with a condition called Megaesophagus, so when he eats, he needs to be in a unique chair to be upright. This backpack is perfect because after he eats I can just carry him around and he is in his upright position while he is also enjoying the view and loving it. He was right away comfortable in the backpack and loved the idea of denying the view while hanging with his best friend after a long hike and meal. I now wish I had bought this product a long time ago. I will be using it when we go in the town when we go on the electric scooters when we go for a walk by the lake, all the time. I love it.

Babbie Roxanne Holden

My pups love riding in the backpack! It’s a great way to socialize without touching the ground before all puppy vaccines are given!!! Love it!!!

Amber McDown

We bought the K9 Sport Sack for our little Bichon Dolly. She absolutely LOVED it! I was honestly skeptical about this purchase but needed something for our upcoming campo trip! She loved every minute of our hike and even sat on her bag when she was ready to go back in! So impressed and thankful! Can’t wait to purchase one for our new puppy!

Sandra McMurtrey Wooten
Small sport sack

We love this, works great for my 11 pound mix.

Christopher and Rin Rin in Japan
Good cost performance

Lightweight and compact. I keep it in the car a d use when I take Rin Rin (4.5 kg toy poodle) into shops, etc. Like all the sport sacks, excellent build. May I offer one suggestion to the designers (for all the sports sacks) ? Please add a few rings and hooks to strategic locations, especially the front of the chest straps, so that you can clip things like flashlights, bottles, etc. Thanks and keep up the good work.