With the Rabbit Freezable Beer Glasses, the ice is outside of your beverage, not in it. The Beer Glass will cool your drink down to just above freezing and will keep it cool for up to two hours. The silicone base acts as a built-in coaster to prevent condensation from escaping. The silicone sleeve also protects your hands from the chill. The set includes 2, 12 oz glasses. Great for an outdoor BBQ with friends!