Shopping Cart

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: USPS Priority Mail shipping (average delivery in 2-5 days unless alternate method is selected). UPS 2nd Day Air shipping is also available.

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 97 reviews
Terrific for short excursions

I have taken my 10 pound, 8 year old dog out and about running errands in a lightweight sling carrier, but I got the trainer pack for a recent adventure trip. Wanted the option to carry her in a pack when biking and hiking. She especially loved riding in the pack when we biked — Ears blowing in the wind! Because it’s a cozy fit, the pack swaddles and relaxes her. Normally she can be an anxious dog when we go to new places, but in the pack she was relaxed. An added plus! I would consider getting the Air 2 sack if I did more rigorous adventures, but the trainer is good enough for our short trips. I’m 6’ and my dog fits in a small sack; although it was comfortable for me, I think an Air2 would be an even better fit.


My dog Harley loves this pack! He is disabled due to degenerative nerve damage. So it's either the pack or the wheelchair. Obviously the wheelchair doesn't work on the bike, so it's the pack! HE LOVES going for rides!

Not A Single Regret

We purchased the Trainer for our new AmStaff puppy. Early socialization is so important but between not being completely vaccinated and the pandemic it was very difficult to do the normal meet & greet socialization. This is where our K-9 Sport Sack comes in! It did two things: 1. Got her out and about and experiencing life in a completely safe way and 2. Got ME out and moving about! She's now too big for her original Trainer but we fully intend on purchasing another pack for those longer hikes :)

So happy

I got to take my little Donut on our adventure to Yosemite in the trainer sport sack! It was a huge hit with the hikers around, and I’m so happy I get to bring my baby everywhere! The backpack was a bit big for her, so customer service sent me a block for the bottom which was amazing. 10/10 recommend!

Kendra Chase
Love our packs

So nice to adventure and not worry if they are secure and comfortable! Especially our senior jack Russel who is 14 years old. Thank you for This product