BIRKENSTOCK Wide Type BLUE FOOTBED TRADITION New, Unused. These are half insoles from Birkenstock. The size is 40, which is approximately 25.5cm to 26.0cm. I bought these as a spare, but I'm selling them because I don't plan to use them. Please refer to the following quote from the official website regarding sizing: ======= If you are unable to try them on, generally use a size 2 sizes smaller than your foot size. This is just a guideline. ======= The item will be shipped in its original box with simple packaging via Rakuraku Mercari delivery. #Birkenstock #Insole #HalfInsole #Sneakers #LeatherShoes #ShoeCare