CARHARTT WIP Phil Backpack Black. Backpack made from 100% polyester Duck Canvas. 50 x 33 x 15 cm / 19.7 x 13 x 5.9 inch. 24.8 liter. Water repellent fabric. Lined. Main compartment with zip and flap closure. Inserted zip pocket at front. Padded laptop pocket inside. Adjustable shoulder straps with sternum strap. Square label on front pocket. Flag label on shoulder strap.