If you're rocking outdoors with us, you're going to want to stay hydrated so you can sing along. And since our summers get pretty hot here, you're going to want your icy cold beverage to stay that way. Bison Coolers use the thickest stainless steel on the market to build their tumblers because they wanted a strong, drop-resistant tumbler that could be used for years. Vacuum-insulated construction keeps liquids cold for 12 hours and hot for up to 6. It's finished with a leak-proof lid and the Already Gone logo laser engraved on the powder-coated exterior for a steady grip that won’t chip, fade, or lose its coolness factor.