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