The Norsk interlocking foam mats are made from recycled materials to providing a environmentally friendly flooring solution for your garage, basement or any other room of your house. These foam mats will endure years of use and have anti-slip texture on both sides. This foam mat assembles easily like other flooring options including, puzzle mats, foam tiles, garage tiles, and foam play mats. This set is reversible, allowing you the option of all gray, all black or a checkerboard pattern. We also include straight edge borders to provide a finished, uniformed look. Each interlocking mat is .75-inches thick at 24-inches (L) by 24-inches (W). This thicker grade mat has a patented reversible design making it functional for an infinite variety of uses and applications such as exercise rooms, home gyms, garages, workshops, camping, recreation, anti-fatigue areas and fitness studios. All Norsk foam products are latex free, lead free, ASTM rated child safe areas. Norsk interlocking foam mats come with a limited lifetime warranty. Patents US 9,289,085; US D532,238; and Patents Pending.