Backpack carrier · K9 Sport Sack

K9 Sport Sack Air 2

A breathable front-facing dog backpack

Updated October 2026

Quick verdict

A well-designed dog backpack.

Strength
Big mesh panels and Angle-Base support.
Trade-off
Sizing must be exact.
Right buyer
Owners of small-medium dogs who hike or commute.
Max. dog weight (seller)
30 pounds
Dog size
Medium
Dimensions (seller)
12"L x 10"W x 3"H
Product weight
1.1 pounds
Material
Polyester
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Why it matters

The Air 2 is K9 Sport Sack's everyday backpack carrier. Extra-large Macro-Mesh panels on each side keep air moving, and the patented Angle-Base supports your dog's rear and tail. Collar and harness clips keep the dog secure, a fur flap stops hair catching in the zipper, and side and back cinch straps tune the fit. The Medium suits dogs 17–19 in from collar to tail base with a girth up to 28 in, such as Beagles, and up to 30 lb; it weighs 1.1 lb empty.

Who it's for, and who should skip it

Good fit if

  • Small-medium dogs
  • Hikes and city outings
  • Dogs that like to see out

Look elsewhere if

  • Dogs over 30 lb
  • Long hot days
  • Anxious dogs not used to carriers

Pros and cons

Pros

  • Big mesh panels
  • Angle-Base support
  • Light

Cons

  • Price
  • Exact sizing needed
  • Front-facing only

Limitations to weigh

  • Weigh your dog in the carrier against the stated limit, and do not carry more than is comfortable for you.
  • Backpack carriers suit short outings; give your dog breaks and avoid hot sun.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Dimensions (seller)12"L x 10"W x 3"HRetailer
MaterialPolyesterRetailer
Features (seller)Easy to UseRetailer
Model numberAIRT-M-BKRetailer
Product weight1.1 poundsRetailer
Dog sizeMediumRetailer
Max. dog weight (seller)30 poundsRetailer

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Final verdict

A comfortable, breathable dog backpack.

Where to buy

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

What size dog fits the K9 Sport Sack Air 2 Medium?
Dogs 17–19 in long from collar to tail base, girth up to 28 in, up to 30 lb.
Is it breathable?
Yes, with large mesh side panels.