Conforms to the SG standard of 2020, (good) Japan Soft Baseball Federation J.S.B.B certified product. Ise Referee Honpo Mask Premium Model and Wilson PU Leather Pad are sent as a set. Please replace it yourself. The mask frame is docked with Wilson NPB specifications on the Ise Referee Homesto. This is a collaboration mask with Ise Referee Hompo and Wilson. The only Wilson SG compatible mask without "Tosaka" is "Niikuratayama" and "Shinkasumigahura". Steel frame weighs only 560g. High gauge type (material): Carbon steel (pad material): Synthetic leather (weight): 19.2 oz (560 g) (shape): Compatible with high-gauge, basement hats.