Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't keep very cold even after following instructions to the tee

The wallet DOES keep just slightly cooler than air temperature. So, it's 85 degrees out and it's like 83 in the wallet. I followed the instructions about how long to keep the sleeve under water and I used cold water too. Another thing--you can't place this inside a sealed bag--it needs air to breathe to keep so called "cool". I have a waterproof case that I wanted to place it in but could not because of the instructions.