001 is a sign for skin feel condoms, they are firstly used by Japan companines. Super thin condom is made from polyurethane which is the thinnest condoms in the world now. Their real thickness can up to 0.01mm, 0.02mm and 0.03mm. which is only 1/3 of regular latex condom’s thickness of 0.065mm, that’s why they can feel the skin temperature. …