SoHo Insulated Whiskey Drinking Glass This year, take your gift game up a notch with this set of unique frozen whiskey glasses! The double walled glass is made of ultra durable borosilicate glass with a 6.8-ounce capacity. (Dishwasher safe, not microwaveable) Built-in liquid freezer gel chills his favorite whiskey seconds and keeps it cold, without any dilution! (Recommended freeze time: 3+ hours) This set of whiskey glasses makes a fun and unexpected gift for the guy who has everything! All SoHo products arrive gift boxed and are backed by our Lifetime Satisfaction Guarantee.