Small AirPacks Backpack Patented air technology reduces stress on back by up to 80%, lightens effective load by 50%. Transfers weight from shoulders to lower back for revolutionary comfort and support. Recommended by the Congress of State Chiropractic Associations. 1650-cubic-inch capacity, fits students shorter than 5' or who measure 15" or less from the top of the shoulder to the natural waist.

Physicians recommend that students carry no more than 15% of their body weight on their shoulders and backs, yet studies show they are lugging as much as 40% each day. Recommended by the Congress of Chiropractic State Associations and developed with orthopedic professionals, the unique AirPack System, has been university tested and clinically proven to help students tote today's loads more safely and comfortably. Our patented, ergonomic air-transfer system, with its inflatable lumbar cushion and wide shoulder straps, redistributes weight from the shoulders to the hips and lower back to promote an upright standing position and enhance the body's natural ability to carry weight. Smart design features include: shoulder straps that automatically adjust side-to-side to help maintain correct ergonomic support, even when using just one strap; adjustable strapping for even more customized fit, three convenient zipper compartments that help organize books, pens, and other necessities (even a handy key keeper), and two mesh bottle pockets. Made of durable polyester in a variety of popular colors. 18" x 11.5" x 5.5". Capacity: 1650 cubic-inches. Mini air pump included. The Small fits elementary school students and petite middle school

high school or adults who are shorter than 5"or who measure 15" or less from the top of the shoulder to the natural waist (Medium is for 5'-5' 5" or measure between 15" and 17"). Measure first,` get the right size and enjoy AirPacks relief soon.