Toe ISI Toe Piece – The new "Intuitive Step In" tech toepiece features a rubber stop pad and a wider step-in platform with easier step-in than previous models. Anti Ice Pads – Anti Ice Pads in the base of toe to prevent icing in critical areas. Heel Alpinist Heel – Alpinist heel with adjustable lateral release with different DIN options and 15mm of heel adjustment range (+-7,5mm). Offers three walking modes thanks to the hot forged aluminum climbing aid. The “Fast Shift Mode” enables quick shifting between neutral and highest walking mode. Active Length Compensation – Active length compensation in the heel allowing the heel to move back up to 4 mm when the ski is flexed. Tour Mode Alpinist Climbing Aids – Neutral walking mode and two climbing aids offering 5° and 9°. The fast shift mode enables quick shifting between 0° and 9° without the need to rotate the heel. Boot Compatibility Tech Inserts Required Length Adjustment – Alpinist heel offers a 15mm heel adjustment range (from -7.5mm to +7,5 mm). Additional Features Compatible with Kingpin / Alpinist Crampons Recommended Skier Weight – Max. 242 lbs. (110 kg) Ski Compatibility We recommend a brake width equal to or at most 15 mm wider than the ski waist width. Marker Alpinist 12 Alpine Touring Ski Bindings