YETI Rambler 20 oz Stainless Steel Vacuum Insulated Tumbler with Lid is a product that is built for those who lead an active lifestyle. It is perfect for taking on hikes, to the gym, or anywhere else where you might need a refreshing drink. The double-wall vacuum insulation keeps beverages cold or piping hot longer, and the kitchen-grade 18/8 stainless steel body is puncture- and rust-resistant. The Duracoat is a durable coat of color that won't fade, peel, or crack through extended field use and also provide additional grip to the rambler's exterior.