The TNP Accessories Interlocking Floor Mats are ideal for placement under exercise equipment such as treadmills, exercise bikes, benches etc. Made from quality grade EVA, each of the 4 mats are 60cm x 60cm and are interlocking (like a jigsaw) They are 1.0cm in depth. Not only are they ideal for placement underneath exercise equipment, they are ideal for putting underneath washing machines, tumble dryers etc. 100% Waterproof Anti Slip Patterned Finish Non-slip, Water Resistant and Easy to Clean Tear Resistant Interlocking Design Reduces Noise and Provide a Firm Shock-Absorbing Surface Easy to Expand Area Coverage by Adding More Mats