600-denier and 420-denier polyester ripstop with reflective trim. Two large zip compartments. Inside organizer pockets. Key/accessory clip. Padded back compartments for laptop and tablet. Felt-lined sunglasses/phone pocket. Two outside bottle pockets. Outside bungee cords. Air mesh padded shoulder straps. Dimensions: 13"W x 19"H x 6-1/2"D. Image area: 3-1/2"W x 2"H.