Water Proof Fanny Pack for Animal Trainers

We went to the state fair the other night.  One thing I'm sure of, they poison the food because I've never gotten heart burn so fast in my life.  Anyway, they had a sea lion show and I got to thinking about the packs and buckets the trainers used to hold their fish.  They need to make a water proof fanny pack that you could put ice and fish into while training you sea lion.  In order to make the business viable you would probably need to market to whale and dolphin trainers, penguin trainers and perhaps the sushi industry (door to door sushi chef).