The back is gray mesh. It uses a fake suede microfiber with excellent heat shielding properties. The back uses thick mesh, and the smooth side is on the outside, so it feels good against the skin! You'll be amazed by the heat shielding. This is a fake suede microfiber & mesh sauna hat. Thick 3D mesh is used on the inside. The outside is fake suede, and the inside is hard, so the insulation effect is doubled! The material that protects you from the heat is impenetrable. This sauna hat is designed to cover your ears completely, making it difficult for heat to enter. Height: 29cm Head circumference: 70cm 185g Due to the dyed fabric, there may be areas that look like stains or dirt. Please understand. *When washing, turn it inside out with the mesh side facing out, and put it in a laundry net. There is a possibility of color fading at first, so please be careful. Color transfer may occur if washed with light-colored clothing, so we recommend washing it separately. Unisex, free size.