This fanny bag is made of nylon. The size is 12.6 "L x 0.39 " Dx 4.33 "W. It fixes nicely on your waist, chest, and shoulder and the shoulder strap is adjustable to meet different requirements. Keep all of your essentials within easy reach when you're jogging, dog-walking, bicycling, or in other situations where you need your hands free. All waist packs are unisex and great for men, women, and kids.