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 mats are extremely durable and will last for years. The foam mats assemble easily like other flooring options including, puzzle mats, foam tiles, garage tiles, and foam play mats. This set includes primary colored interlocking foam mats with straight edge borders to provide a finished, uniformed look. Each interlocking mat is .47-inches thick at 24-inches (L) by 24-inches (W). All Norsk foam mats are latex free, lead free, ASTM rated child safe and ideal for use in schools, daycares, churches, basements exercise rooms, camping and recreational areas. Norsk 240147 interlocking foam mats come with a limited lifetime warranty. Patents US D532,238; and Patents Pending. Interlocking foam mat set endures years of repeated use Ideal for use in day cares, play areas, workshops, fitness rooms, camping and temporary use in poolside areas Latex free and lead free with an ASTM child safe rating Individual interlocking mat pieces measure 0.47 in. thick at 24 in. (W) by 24 in. (L) Covers an area of 80 Sq. Ft. Material EVA Foam Features Interlocking Size 80 sq. Ft. Color Gray Count 20 Shape Square Pattern Solid Print Brand Norsk Model 240247_5 Weight 3.82 lbs