A university outdoors club near me has a hypalon whitewater raft that has been in storage for 7 years. It has been rolled up and stored in an unheated garage. I want to inspect it to see what kind of shape it is in. The temperature locally is around 30 degrees this weekend. Should I wait for warmer weather to unroll it to avoid damaging it while it is cold, or is it safe to unroll and handle cold?