Men's Carhartt Wip Essentials Bag - Green - Backpacks The Essentials Bag from Carhartt-WIP has been constructed from a recycled polyester-blend canvas. This water-repellent piece features two main openings, fastened with a two-way zipped closure and is fully lined. 97% recycled polyester, 3% polyurethane. Dimensions: 17 x 16.5 x 6 cm / 6.7 x 6.5 x 2.4 inch. Capacity: 1.7L. Water-repellent. Adjustable shoulder strap. Square Label.