The collapsible straw is made of 304 stainless steel for durability and rust resistance. The set features an aluminum alloy water storage tube and a telescopic straw. It can be attached to a backpack or your body for easy portability. The tube has a smooth, even edge. The soft nylon brush provides a deep, hygienic clean. Both the straw and brush are height-adjustable. 4 7/8" L x 5/8" W
