This Shinai bag is made of 1680D polyester which is durable, thick, highly resistant to abrasion and friction. It comes with an adjustable shoulder strap so you can adjust it to the length that is desired. It also comes with 2x extra zipper pockets to store your Tsuba, Tsuba stopper or Shinai Polishing Block. This product can be used by adults or children and can hold up to 3x Shinai or Bokken.