About product: Mahjong mats are made of high quality non-slip neoprene, safe, odorless and PAH-free, which is an excellent choice for safety and comfort. Reasonable size: Mahjong mat measures 31.5 x 31.5 x 0.12 inches (80 x 80 x 0.3 cm), fits most square tables Noise reduction and protection: The high quality rubber used to make mahjong mats has g..