Lily's Home Double Wall Gel Freezer Mugs. 10 Oz each - Set of 4 in Blue, Red, Orange and Green CHILL DRINKS WITHOUT WATERING THEM DOWN. Serve any beverage in these freezable mugs for an instant ice-cold chill. GREAT FOR DESSERT. Serve ice cream and sherbet in these mugs to prevent melting, even in the blazing summer heat. FREEZE AND REFREEZE. Hand wash and refreeze for four hours so you always have frosty mugs. FILLED WITH CRACKLE ICE GEL. Double-walled insulated mugs contain crackle gel, which creates a frosty appearance between your beverage and the mug. KIDS LOVE THEM. Made of a BPA free acrylic material, wont break if dropped. Easy-hold handles and bright colors make these mugs a hit with kids.