Tom Knox Loose Denim Jeans. The Dickies Duck Canvas Utility Backpack is a functional piece made from our durable 100% brushed cotton duck canvas. Featuring adjustable padded straps for comfort, mesh water bottle pocket, two zip-up front pockets with utility straps for easy carrying of tools or everyday essentials and iconic woven Dickies label. Available in black and desert sand. An authentic utilitarian bag made for everyday use. Materials: BRUSHED DUCK CANVAS, 100% BCI COTTON, 12 OZ.