CARHARTT WIP Philis Backpack Lumber I031575. 100% recycled polyester canvas backpack, 11.25 oz. 50 x 33 x 13 cm. 21.5 liters. Water-repellent fabric. Unlined. Main compartment with zip and flap closure. Front flap pocket with zipped pocket inserted on the left. Adjustable straps on the sides. Interior padded laptop pocket. Adjustable shoulder straps with sternum strap. Square label.