Double Wall Vacuum Insulated provides maximum temperature retention of both hot and cold beverages (Up to 6 hours hot and 24 hours cold); High-Grade 18/8 (304) Stainless Steel is highly durable and corrosion-resistant; Copper Plate Insulation; Three Position Slider: Cover, Sip, Chug; Reusable Straw; Ergonomic Handle; DuraGrip Powder Coat Finish is both ultra-durable and provides a textured surface for you to grip; Environmental Friendly Recycled Content BPA Free; Sweat Free Exterior; Non slip base; Designed to fit most cup holders