This is a strap that came with the PETZL LYNX crampons. I'm selling it because the one I received was a bit short, so I bought a separate strap kit. I found it short with a shoe size of EU 44 (28cm), so I recommend it for shoes of EU 42 (26cm) or smaller. The length from the sewn-in part of the buckle to the tip is approximately 66cm. *How much extra length to leave at the end is a matter of preference, so please consider it in comparison to the straps you are using.