• Answer The L and XL refer to how wide the brake is. You need a binding with a brake that's wider than the ski. However you usually don't want to go any wider than you have to.

    From Black Diamond:
    S fits up to approximately 82-mm [ski] waist
    M fits up to approximately 95-mm [ski] waist
    L fits up to approximately 108-mm [ski] waist
    XL fits up to approximately 120-mm [ski] waist
    Answered on 10/30/2016 8:27:29 AM by Travis from Wasatch Range, UT