Keep your beverages Ice Cold with this Set of Double Walled Gel Freezer Mugs 16oz. Frosty Mugs are great for many different beverages and occasions, whether it's around the pool, on the patio or on the couch. Great Freezing Mugs for Beer, Soda, or any beverage of your choice! These freezer mugs hold a total of 16 ounces. This Freezer Mug set comes with 1 Red Freezer Mug, 1 Green Freezer Mug, 1 Yellow Freezer Mug, 1 Blue Freezer Mug. For best results, place the mugs upside down in the freezer for 2-4 hours. Freezing gel crystals will turn white when frozen (Picture shown). These Frosty Mugs are made of high quality Polystyrene, for added clarity and strength. A BPA Free Product. Hand washing Recommended.