DURABLE PEVA BACKSIDE: It is made of PEVA,compared to other blankets made of aluminum,the back of this material is more durable and elastic than a picnic sheet made of aluminum. It can perform better when facing complicated ground.The front side is made of thick polyester using a special weaving process,soft and cozy ,but there is no way to machine wash it.If there are stains on the picnic mat, wipe the surface with a wet towel.
