How to keep foam wings safe from rain

I’m going to a renfaire and am planning to wear my foam wings. They are 140cm big and the feathers are hot glued together. It may start raining for a little during the afternoon and I don’t want to risk it falling apart or anything. I was wondering if anyone could give me advice on how to keep them safe in case it rains? I bought them off etsy and they were expensive so I want to preserve them. Thanks!