Stainless Steel Tumblers With Straw: Made Of Premium 18/8 Food Grade Metal, Durable, Adopt Double Walled Vacuum Insulation Keeps Your Beverages Hot Or Cold For HourCupholder Friendly：The Insulated Cups Has A Sleek, Tapered Design That Fits Most Cup Holder In Car, With Two Reusable Straight Straws, You Can Stay Sipping From Your Essential Hydration Companion, Even On Your Busiest Days