FreeKnight 40L outdoor multi-purpose sporting backpack Imported Multi-compartments with 40L super capacity, Dimensions: 21.26" x 13.78" x 8", Weight:2.03 lbs. Shoulder Strap System: Special shoulder straps are ergonomically designed with added padding Airflow Back System: Multi-panel airflow design provides extra padding for comfort and maximum back support. External dual pockets feature elasticized mesh which expands to secure various size water bottles Great for outdoor sporting, hiking, travelling