Ecogear Big Horn II Backpack, Grey Backpack constructed with REPREVE fabric made from recycled water bottles and heather polyester Made from recycled PET bottles! Reflective piping for nighttime visibility Dual-side mesh bottle pockets for water bottle storage Measures 18.5"L x 13"W x 8"H Constructed of repreve rpet materials Dual side pockets Ergo-padded shoulder straps Moisture wicking mesh back Internal organizer pocket