Multiple times a day Jason brings me into the waterbed room to get help getting under the blankets. We don't have a working heater for the water bed and although I don't like it Jason loves it. He lays under the feather mattress and the quilt. He has the sensory input of the heaver blankets on top of him as well as the cold mattress. This is something he discovered by himself so we let him do it when he feels it necessary to have some sensory input.