These double walled acrylic freezer mugs are crafted with a fun "crystal-frosty" appearance, which actually consist of non-toxic freezer gel, sealed into the side walls of your mug. That's where the secret of freezer mugs lie. By placing these handy acrylic mugs into your freezer for about 2- 4 hours (they work best when placed upside-down) the freezer gel freezes, offering you a unique way to keep your beverage icy cold. Although they are hand wash only, these mugs are durable and convenient for any busy bar, restaurant or lounge.
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