Reduce 4-In-1 Drink Cooler is designed for hard seltzer lovers and craft beer drinkers alike. Fits slim cans, standard cans, and bottles. It also seamlessly converts to a cup so you can switch up your drink without missing a beat. Patented 4-in1 design. No adapter is needed. Dual wall vacuum insulated, does not sweat. Keeps drinks cold for hours. Cup holder friendly.