Patent ID: 7854672

Claim:
A ball comprising: a core; and a surface cover formed by sewing two shaped-mated covering pieces, each of said covering pieces having a close-to-edge area defining inboards an inward circumferential zone in which spaced through apertures are defined, said close-to-edge area having an inclined surface, said through apertures being circumferentially distributed along the inward circumference of said close-to-edge area; wherein an outward circumference of said close-to-edge area forms a turn-back section, said turn-back section having a thickness that is one half of thickness of each of said covering pieces so that when said turn-back section is a turned back and folded overall itself, over thickness is identical to thickness of each of said covering pieces and width of said covering piece will not be enlarged, said a turn-back section having a width that is at least 1 mm.