The Wyld Gear Party Cup Tumbler is designed to look just like the iconic plastic cups that have fueled parties for a generation, but with a reusable, eco-friendly and high-performance upgrade. This party cup is made with insulated stainless steel that will keep your drink ice-cold (or hot) for hours. Pour in the beverage of your choice and pop the lid on top. The Wyld Slyder lid is completely leakproof, so feel free to dance, cheer, and get rowdy - your drink will never spill! Plus, the bottom of the cup is ringed with a non-slip rubber base to hold your cup in place, even while the party rages around you.