"Okamoto's condom ""001 (OKAMOTO ZERO-ONE)"" are Made in Japan. They are manufactured at our Ibaraki Plant in Ryugasaki, Ibaraki Prefecture.
As the name suggests, Okamoto's condom ""001 (OKAMOTO ZERO-ONE)"" are our thinnest　condom ever, at just 0.01 millimeter range. Besides being amazingly soft, you may feel no constriction with it. The warmth and sensation of partners are conveyed directly, bringing you and your partner closer together."

http://okamoto001mm.jp/