CAN TRAVEL TUMBLER GO IN THE FREEZER? 21 May 2021 11:01 Updated Follow No. Freezing temperatures can damage the insulation properties of Travel Tumbler (and if closed, the vacuum insulation will prevent the inside from becoming cold anyway). In case of misuse, we cannot apply Warranty. Related articles DO I NEED TO USE SPECIAL CAUTION WHEN USING TRAVEL TUMBLER? CAN I FILL TRAVEL TUMBLER WITH ICE? WHY 18/8 STAINLESS STEEL? DISTRIBUTOR INFORMATION ARE 24BOTTLES PRODUCTS NICKEL-FREE?