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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 173 reviews
Edward McNames

Love the K9 Sport Sack. I think Wren loves it too, but since I can't get verbal confirmation I have to rely on her willingness to get in the bag as proof that she is down with it. I do have a bit of trouble clinching the straps once she is on my back, but all in all I am very happy to be able to ride with my pup!

Amazing products and customer service!

Not only are all K9 Sport Sack products amazing, they have the best customer service. The zipper had had a slight issue and they replaced the product right away. My little pup loves her K9 Sport Sack and I love this company!

Brianna Valerio-Valle

I've worn the pack a few times since receiving my order and it is amazing. The sizing was perfect. I have a 12 pound poodle mix and went with the size small. He is very energetic, but is very comfortable and relaxed when inside the pack. I highly recommend purchasing one, it is very helpful to be able to have him on my back when hiking in difficult areas.

Kathy Bell

Our Charli seems to enjoy riding on her dad's back. She likes to look around and changes her position to look from side to side.

Josh Sell
K9 Trainer Review

Living in the city, this backpack has been amazing to help me travel around the city via bike with my puppy! It’s very easy to get him into it and once on my back, my pup is super snug and comfortable. I’m hoping he doesn’t get too big, so that I can keep on using K9 packs as he continues to get older. Thank you K9 for designing such a wonderful product. :)