Camco's Currituck Standard Mouth Bottle features a double-wall, copper-lined vacuum insulation that retains hot or cold temperatures for hours. It is constructed of durable, kitchen grade 18/8 stainless steel that won't impart a metallic taste in your beverages. The BPA-free lid has a sealing gasket to help prevent temperature loss. It has a loop on top for a strap or carabiner. A gray silicone wrap provides a comfortable, secure grip.