Custom Made Replacement Spa Cover - Hot Tub Cover Custom spa covers made to fit any size or shape spa-fill in your dimensions and select options on our site Manufactured using 30 ounce marine grade vinyl, 4 locking tie down straps (meeting ASTM standards) ...2 recessed handles, skirt and a 20 gauge steel reinforced center channel 12 color options to choose from (see additional images) Price listed is for a 1.0 lb. density foam, 4 inch - 2 inch thick taper spa cover up to 96x96 inches in size