From the first gulp to the last sip, the Stanley insulated beer stein keeps your brew refreshingly chilled. The secret behind the thirst-quenching thermal insulation. Vacuum insulated double walls that keep drinks hot for up to 1 hour, cold for up to 5 hours, and chilled for a whopping 20 hours. And with a large capacity of 24oz, you' ll have the power to empty 2 cans at a time and cut down trips to the beer cooler or fridge in the kitchen. Dishwasher safe and can be quickly rinsed courtesy of the smooth interior.