Promat Jigsaw Judo Mat as recommended and approved by The World United Martial Arts Federation Applications: Martial Arts Studios Boxing Gyms Combat Training Yoga and Pilates Aerobics YMCA Multipurpose Rooms Indoor Kids Facilities & Playgrounds Basement Flooring etc.... The jigsaw judo mats is red on one side and blue on the reverse - One solid piece of EVA Foam Features: Gym mat easy to assemble Truly reversible Double Sided - Double Colour Border strips included Waterproof Jigsaw Mat Tough top surface Shoes & boots are OK Durable EVA high density foam Expand your floor as needed All Gym Mats have passed: EN71 (2005) + A6 Part 1 Physical & Mechanical BS EN71 (2006) +A1 Part 2 Flammability BS EN71 (1995) +A1 +AC1 Part 3 Toxicity and of course Lead Free and Latex Free All gym mats are 1m x 1m in size.