Glass Sipper/Tumbler with Straw and Lid (450 ml) - 1 Piece (Multicolor Unicorn)Slide & Open Glass Sipper/Tumbler with Straw and Lid (450 ml (Multicolor Unicorn) About this item Keep your beverages ice cold with these double-walled gel freezer mugs and a great way to cool down after a long day or being out in the sun by MiRiM. Place your mug in freezer compartment of your refrigerator for 2-4 hours, when the liquid appear frozen, remove it from the freezer and fill it with your favourite drink. Perfect for beer, soda, water - and many other beverages, perfect for around the pool or patio, great frosty mugs to take out of the freezer and enjoy with your favourite beverages Designed to be used for cold beverages only and do not freeze below -10 degrees Fahrenheit Best choice for girls and gifting options........🍻Never used