SPECIFICATIONS –Product Type: Freezer MugsMade from BPA-free acrylicDouble Wall ConstructionPackage Quantity: You can Purchase 1Mug, 2Mugs, 3Mugs, 4MugsSAFE TO USE –The mugs are safe to use for any beverage. For Best results, Place mugs upside down in the freezer for 2-4 hours.Taking out the mugs and pour into your beverage, then wait several minutes, the gel inside freezes and will keep your favorite beverage chilled.Hand washes for best results. We do not recommend putting these mugs in the dishwasher, as the heat may cause the gel to separate.ENJOY THE CLEAN AND FRESH TASTE –Enjoy the clean and fresh taste of your favourite drink from your freeze mug. No matter where you are in the world. This modern shape of our freeze gel mug gives it a nice feeling in your hand and serve any beverage in these freezable glasses for an instant ice-cold chill.RE-FREEZABLE CRYSTAL TECHNOLOGY –Crystalized gel is safely placed in between the double walls (never comes in contact with your drink) keeps your drinks cold for hours without the watered down effect of ice. No more diluted drinks.PERFACT GREAT GIFT IDEA –Whether you're looking for a perfect gift to spruce up your friend's garden, or if you need a housewarming present, This Double Walled Gel Freezer Mug suitable for everyone.