A bag made of durable nylon, use for separating the dry clothes and the wet clothes when we are doing sports, swimming, gym, Fishing, riding, climbing and skating. It has two parts. One part can hold dry clothes, shoes or others dry things. The other part is waterproof. You can put your wet clothes in it. It is very convenient. 17 11/16" L x 6 1/4" W x 15 3/4" H