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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 4-25 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 199 reviews

We love this. We use it to take our dog out to socialize when we want to limit interaction and keep her safe. It took a short while for her to adjust but it is easy to use.


I love it! Absolutely fantastic for my 17 year old senior chihuahua!

Brooke Meneely
Trevor in the UP!

We took our 5-month old Boston Terrier on a road/camping trip to the Upper Peninsula of Michigan. We were worried how he would do around more dogs and people so we got him a personalized K9 sport sack. He loved the view from mom’s back on Mackinaw Island, Charlevoix, Munising, and Petoskey!

Monica Roberts
She loves it!

Our Doxipoo Penny loves her bag and loves the wind in her face. Great product!

Grace Reinhardt
best little pack

Love this for my mini doxie. she is safe and secure on bike rides