Purchased tumblers that don't do what they claim to do. I put the cups in the freezer and froze them for over 24 hours. I made sure I started with a cold beverage. Within a half hour my beverage was getting warm. Had to put ice in cup.
Purchased tumblers that don't do what they claim to do. I put the cups in the freezer and froze them for over 24 hours. I made sure I started with a cold beverage. Within a half hour my beverage was getting warm. Had to put ice in cup.
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