Water resistant and anti-scratch polyester fabric material make the bag protective and durable for hiking, kayaking, snorkeling, gym, cycling, bike riding, walking, traveling, amusement park and daily use. Satchel strap is adjustable for as tight/loose, to hang as high or low as you want. Comfortable wide breathable mesh shoulder straps with plentiful sponge pad help relieve the stress from your shoulder.Padded strap and back is very comfortable and lightweight,also breathable mesh doesn't make you sweat.