Go Green - Stainless Steel Straw & Brush Kit is the handiest tool for reusable straw owners, making washing out straws a breeze. It is made of high-quality, durable stainless steel with nylon bristles. It is perfect for cleaning stainless steel and glass straws. These straws are perfect for both hot and cold drinks. These straws are as durable as they are elegant, with a clean look and the reliability to not get soggy during normal use.