Boston Red Sox MLB Tumbler Drinkware Set (3 Pack) 16-oz crystal freezer mug Combines state-of-the-art refreezability with team colors and graphics Technology keeps drinks "crushed ice" cold for hours without the watered down effect of icePlace in freezer 1 hour or more prior to use, when frozen crystals will turn a frosty white color Filled with non-toxic, refreezable crystals Not recommended for dishwasher or microwave Officially licensed Made in China