The addition of the Extended Power Frame (EPF) found on the Duke EPF and new Baron EPF gives Marker something totally unique to the market, a full suite of climbing-enabled bindings with unparalleled power transmission - Size S: 265-325mm - DIN Range 4 - 12 - Recom. Skier's Weight < 120 kg - Stand height w/o ski 36 mm - Weight: 1020 g / piece - Size L: 305-365 mm boot external length - DIN Range 4 - 12 - Recom. Skier's Weight < 120 kg - Stand height w/o ski 36 mm - Weight: 1040 g / piece If you order bindings without skis, mention the width of your skis at the center.