Clinically proven to reduce backpack stress.
Airpacks, ergonomic design combines wider shoulder straps and an inflatable lumbar cushion, which when properly positioned in the small of the back, creates a fulcrum to redistribute the weight from the shoulders to the hips, promoting a healthier upright standing posture, enhancing the body's natural ability to properly carry weight. Getting the right fit is very important to realize the AirPacks® unique ergonomic design benefit.
AirPacks, developed by orthopedic professionals are university-tested, clinically proven and are proportionally sized for students of all ages, with top and bottom adjustable shoulder straps that also automatically adjust from side-to-side to help maintain this correct ergonomic support even when using just one strap. See the AirPacks sizes and dimension below or product page description to choose which has the right proportional fit for you or the student in your life.

Small backpack:Fits average-sized elementary school students and petite adults who measure 152cm or less from the top of the shoulder to the natural waist. Available in pink and blue.
Medium backpack: Fits average-sized middle school students and smaller adults who measure between 152cm - 165cm from the top of the shoulder to the natural waist. Available in black, blue, pink and green.
Large backpack: For taller/larger teens who measure more than 165cm from the top of the shoulder to the natural waist. Available in blue, maroon and black.