These Gym Rubber Mats are made of recycled rubber granule and are available in different sizes, such as 500x500x10mm. Because this Gym Rubber Mats won't crack, tear, split or wrinkle, it's great for a variety of uses, including weight rooms, children's play areas, ice arenas, and health clubs. These gym mat tiles absorb the shock and noise of free weights being dropped, as well as the impact of other gym equipment.