Beer ChillR double wall insulated plastic mug; Beer looking freezer gel stays cold when frozen Great for parties, Gifting, College fun; Realistic novelty; shake to create foam; BPA free For best results, place your frosty mug straight up in the freezer compartment of your refrigerator for 2-4 hours, when the coolant (non- toxic) appears frozen, remove it from the freezer and fill with your favorite drink. Classic beer mug is filled with amber coloured distilled water that looks like real beer, complete with faux bubbles, inside of its double wall construction. Feel free to freeze and re-freeze again and again. Do not use in microwave. Do not freeze below -10C. Hand wash only.