311 which is alternatively connected to one another into a grill configuration certain parts of those reinforcement ribs 312 are connected to and integrated with those supports 33 to further improve the strength of both wings 311 as illustrated in fig5 an overweight user may sit on a toilet bowl seat 31 with both wings 312 and enjoy more comfort since most of the bottom of the user rests on the seat and both wings now referring to fig6 an outer edge 313 of each wing 311 is made higher with the height gradually reducing to an inner edge 314 of the wing 311 while also gradually reducing to the front of the toilet bowl seat 31 until it is at the same level with that of the toilet bowl seat 31 to confine the bottom of the user for more ergonomic requirements furthermore as illustrated in fig7 the width of the outer side of the wing 311 is made reducing towards the front of the toilet bowl seat 31 to naturally connect the front of the toilet bowl seat 31 thus to increase the area of the wing 311 for both wings 311 to sufficiently support both thighs of the user thus for the user to feel even more comfortable when sitting on the toilet bowl seat it will be understood that each of the elements described above or two or more together may also find a useful application in other types of methods differing from the type described above while certain novel features of this invention have been shown and described and are pointed out in the annexed claim it is not intended to be limited to the details above since it.