1.Material in 600D polyester 2.One large main compartment with double half-moon zippers allows for easy stuffing and opening 3.Front mesh stuff pocket 4.Two side mesh pockets with elastic loops for quart bottles or small items 5.Breathable air mesh tex fully padded backpanel with spiral air ventilation channel 6.Reflective striples for safety 7.Contoured soft-padded shoulder straps covered with air mesh