Please... Can you tell me what the beads are that when they are soaked in water they enlarge and soften and help you to stay cool. I want to put these into a quilted strip. They were sold a few years back in just a long strip to put around your neck. They didn't last long, so I want to put them in a quilted strip. My house is soooo hot and I am miserable. I think this project would help me, but I can't remember the name of the little beads or pellets. Thanks!