GSQUARE Interlocking Puzzle Exercise Mats have been crafted from Ethylene-vinyl acetate also known as EVA foam; these EVA foam mats are non-toxic and have a glossy appearance with a rubber-like softness and flexibility. The waterproof essence of the EVA foam makes it easy to maintain and clean, EVA interlocking foam mats are a perfect accessory, as flooring for gyms or home gyms, or even as a playmat for children. The foam cushion of the gym floor mats have a thickness of 10mm; adding a layer of protection from dings and scratches of weights accidentally falling or while using an abs roller. The foam cushion makes standing or performing a yoga pose for a long time comfortable. The diamond plate grip on the EVA foam mat tiles provides traction, firming your footing and handgrip while exercising. The interlocking edges along with the smooth and textured base on the EVA foam mat tiles, keeps the tiles from shifting as you exercise. The waterproof aspect of the GSQUARE Interlocking Puzzle Exercise Mats makes it sweatproof. Easily clean this EVA interlocking foam tiles mat with a damp or dry towel to remove any sweat, water or liquid puddles. The GSQUARE Interlocking Puzzle Exercise Mats can be used as a child’s playmat, take the EVA foam mats with you for picnic and camping trips. The foam mats are lightweight and can be easily dismantled. These interlocking puzzle exercise mats requires zero hassle setup, just interlock the tile like a puzzle. Keep the edges of the exercise mats clean by attaching the boarder tiles. Each pack of GSQUARE Interlocking Puzzle Exercise Mats - Blue comes with 4 tiles and 8 border tiles for a clean and smooth finish. Each tile is 2 ft. x 2 ft. and 10mm thick. These exercise mat tiles will cover an area of total 16 sq. ft.