... tatami mats Made with superior technology and high quality rebonded foam2.the Grappling Mat is specifically designed to withstand the impact ... tatami-style textured vinyl surface and an anti-skid bottom for stability.Features:4.Size: 40" x 40" ,40" ... 2", 2.35"Color: red, blue, green, yellow, black, grey Density: 180kgs/m3,230kgs/m3,270kgs/m3 or other density Taekwondo mat/puzzle mat/martial arts mat/ ...