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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.

For Dogs Ranging 4-30 lbs (2-13 kgs)

AIR 2 sizing: XS 10-13 inches, S 13-17 inches, M 17-20 inches, L 20-23 inches


  • 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

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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 439 reviews

The best purchase I have made for my furbaby. The material is super durable and the quality is perfection. He has no problem sitting in his backpack. I use a towel on the bottom for more cushion. Air 2 is a life saver during long hikes when his short legs get tired. I feel safe and secure running in the trails with him on my back.

Solid bag

Works great, I use it on my bicycle. Keeps her contained and it lets her look around and stuff. I can take her to Safeway now too.

Patricia Lewis
Excellent service

I could not be more pleased with the customer service I received from K9!! I was able to exchange my first (too small) sack for a larger sack with so much ease and convenience. Thank you so much to everyone involved! Fan forever!❤️

Laura Oosterbroek

Lotje loves being carried around in her K9 bag.

Awesome carrier!

Sadie and I just love this Air2 carrier! It gives her a great support with the two Lombard straps. I don’t have to worry about her jiggling around. We just took a hike in Cold Spring New York. She had a blast, so did I because I knew she was comfortable and secure.❤️🐶