foot width requirement of the diameter for the circular cover 20 in fig4 the cover 22 is circular having for example a diameter of 4 feet and can be used for small pools hot tubs and the like the cover 22 is fabricated in the identical manner to the cover 9 discussed previously with the associated drain apparatus 14 positioned generally in the center of the cover the drain apparatus 14 is secured to the cover by sewn hems to facilitate the solar heating of the water the cover 22 is a dark navy blue color the cover is hemmed about its periphery using conventional sewing methods forming a double strength stronger support area where pairs of eyelets 23a b 23c d 23e f 23g h are inserted to facilitate positioning the cover on the pool or hot tub referring to fig1 and 5 the water drain area 14 is constructed by selectively stopping the in line polyethylene heat sealing extrusion or gluing die or apparatus 25 such that layers 11 and 12 are unsealed where the drain mechanism 14 is to be located such selective stopping can be accomplished with blocking means such as the physical plugging of the appropriate slots or openings associated with the hot sealing apparatus 25 to prohibit the sealing of layers 11 12 where the plug is affixed to the die this method is referred to as in line strip coating alternatively a custom hot melt extrusion die not shown can be manufactured for a particular size of cover utilizing blocking.