mattress pads for futons and beds; mattress pads filled with a gel-like chemical substance having a cooling effect, for use on futons, mattress pads filled with a gel-like chemical substance having a cooling or heating effect; futons and quilts; futons filled with a gel-like chemical substance having a cooling or heating effect; pillowcases and pillow covers; pillow covers filled with a gel-like chemical substance having a cooling or heating effect