Exterior: Nylon / Interior: Recycled Polyester Dimensions: 17.75''L x 7.25''H x 3.75''D Weight: 0.44 lbs Volume: 0L Snap buckle on waist strap We took our classic waist pack and made it even bigger so you can carry more than just your essentials. Throw your cell in the front pocket and fill it up with your must-haves like your wallet, keys, and sunglasses. And since this bag is light as a feather you can sling it over your shoulder, carry it on your back, or clip it around your hips and still be comfortable all day long.