1.Main material in 600D polyester 2.Fully padded back panel with spiral channel for air ventilation 3.Two large main compartment with double zippers allow easy stuff 4.One large front pocket for quick and easy access to your belongings 5.Inside secure pocket keeps for safety 6.Breathable air mesh tex padded back panel with air channel ventilation 7.Fast and easy carrying handle 8.Ergonomically shaped shoulder straps with completed-moulded elastic increasing air circulation 9.Interior organizer and pockets