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K9 Sport Sack

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, public transportation, and other similar activities. This carrier fits most comfortably on dog owners with a small to medium build.

All sizes rated to carry up to 30 lb (13 kg)

  • 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

View Patent Info


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.

Shipping, Warranty & Returns


Domestic orders: A variety of UPS shipping methods are available. Please allow for 1-2 days of packaging before your item ships, 2-5 days if ordering a waterproofed or custom item.

International orders: UPS Worldwide Expedited shipping (average delivery in 3-5 days, but varies depending on location).

For more information regarding shipping click here.


We cover manufacturers defects and product malfunctions for the first 60 days (Excludes klearance and custom items). Learn more about our policy here.


If you end up with incorrect sizing don't worry! All size exchanges within 60 days are free excluding original shipping costs (Also excludes klearance and custom items). Learn more about our policy here.

Customer Reviews

Based on 114 reviews
Perfect for my floof

I am so pleased with how comfortable my dog is in this sport sack! She is a 15lb pom mix and I struggle to find a comfortable carrier for both of us. We took her for a spin today and she was just happy as could be. As she continues to age, I know this will be a godsend.

Malia Tano

I was originally looking for a backpack for my corgi because she can’t keep up with my big dogs. The medium size fits her perfect. I originally got the large because that’s what they said would fit a corgi but it was WAY too big for her. The medium works great and she really likes it.

Wilmar Gomez
Happy rider!

My Lhasa Apso weight around 19-20 pounds, we bought the medium size in koral and she loves it!

Emily Meacham
Grate bag

I have a 23 pound French bulldog. I was worried about sizing cents he is wide with short legs bug the size the size chart suggested fits him perfectly. We both love going out ride down town with it. Such a good parches

Monette Savoy
Great Support

No problem carrying my 20lbs dog and very comfy carrying her around hiking.