RecPro 20oz Tumbler Vacuum Insulated 18/8 Stainless Steel Cup w/ Spill-Proof Slider Lid BPA-Free RPT-20S 20oz. capacity double wall vacuum insulation keeps your hots HOT and your colds COLD BPA-Free open/close slider lid with straw slot Made of food safe, rust-proof 18/8 Stainless Steel Comes in a retail box with reusable storage bag Performs like the high priced tumblers for a fraction of the cost