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K9 Sport Sack

K9 Sport Sack® Air 2


The Air 2 is the backpack dog carrier people know best. Available in sizes XS-L, it is a durable, breathable mid-level backpack perfect for smaller to medium size dogs. The Air 2 is offered at a reasonable price while including the essential safety and comfort features needed for a comfortable experience. This backpack is recommended for intermediate grade walks, hikes, public transportation, and bike rides. The Air 2 is constructed with durable Cordura® fabric and form-fitting mesh on the sides for breathability.

30 lb (13 kg) weight limit

  • Ventilated side panels for cooling
  • Adjustable dual side pockets
  • Sternum strap with avalanche whistle clip
  • Wide Base to accommodate your pet and its tail
  • Updated Side Mesh
  • New Side and Back Cinch Straps
  • Updated Shoulder Strap Design (No More Popping Off Chest Clips) 
  • Fur Flap (No more zipping your dog's hair in the bag)
  • Adjustable Collar Enclosure

Compare K9 Sport Sack Carriers

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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.

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 304 reviews
Lea Johnson
Great design

The backpack fit my small dog well and she seemed comfortable. Great design,
and safety features. I appreciate the thoughtfulness that went into creating this bag.

My Criket LOVES to go for her morning rides!

Love this carriers. My Sweetheart Criket was born with 3 legs, and this is an Amazing way for her to enjoy getting around with me on my morning walks. Thanks for making this great product! Even have her ride personalized. Took her two times to get used to being put into it, but now knows that when she sees it….IT’S RIDE TIME!

Katie Q'berry

This is such a cool pack!! Very comfortable and easy to use. My sweet little Jasper was so chill riding around in this. Just awesome:)

Jennifer B
Money Well Spent!

I got this pack to take my 13lb doxie on hikes and bike rides and we are in love with it. She's still coming to terms with getting all zipped up into it without too much drama, but once she is in she settles right down comfortably (which says a lot because she tends to be a nervous nelly). Yesterday I took her out for a 30 min bike ride and she loved it. Even in the VA summer heat she didn't pant or seem to hot with the mesh sides to let air in. Everyone who saw us smiled and waved, people love seeing her out for a bike ride living her best life.


LOVE my K9 sport sack. It’s comfortable and durable and my boy loves it. It’s such a great experience to be able to ride my bike with my pup on my back. If you’re in doubt as to whether you should purchase this, the answer is 1000% YES.