BrüMate Era 40 oz Tumbler with Handle and Straw | 100% Leakproof Insulated Tumbler with Lid and Straw | Made of Stainless Steel | Cup Holder Friendly Base | 40oz (Nightfall Blue)Brand BrMate Material Stainless Steel Color Blue Agave Capacity 40 Fluid Ounces Special Feature Leak Proof, Insulated Recommended Uses For Product Home 100% LEAKPROOF, GUARANTEED: The Era series is the only 100% leakproof straw tumbler that works for both cold and carbonated beverages, thanks to our patent pending Turn technology. So, you can toss your drink in your bag and take it on the go without ever spilling a drop. COLDKEY METAL STRAW: The Era