nordkin
DIS Veteran
- Joined
- Apr 22, 2005
- Messages
- 2,153
They stay cool for quite some time. As long as the gel is activated it will be cool. It took ours about a week for the gel to totally dry. We used ours going through the Panama Canal last year and they lasted the entire time we were out and we just rewet them to be on the safe side before going out the next day.