Turn any surface into a mahjong parlor at home with our 31.5 31.5 anti-slip mahjong playmat. The textured natural-rubber base locks onto wood, glass, or marble, while the 3 mm neoprene core transforms the mahjong table cover into a true noise-reducing american mahjong table cover, hushing up to 60 % of tile clatter so late-night hands stay whisper..