Material: EVAMat Size: about 45*29cmPacking: 4 pieces of One Color in a lotFeatures: 1. It is made of thickened EVA material. It can bear low temperature from -30 centidegree to high temperature of 80 centidegeree.2. Produced with the newest technology， it is moisture-absorbing， corrosion-resistant， bacteria-prohibiting， oil-proof and skid-proof.