Nordica Ace of Spades Ski Boots are a park and pipe rock star with the value and features that make them an ideal choice. They have a 100-130 progressive flex tongue, FSE for stomping it hard and are nicely lightweight. Looking to dominate out there? Put this ace up your sleeve. shell and cuff material: Lightweight High Performance SEBS tongue material: High Rebound PU Ether cuff profile: Adult last width: 100mm flex index: Progressive 100 through 130 Flex wedge: FSE (Full Shock Eraser) easy-entry system: Quick step-in 3-Piece Construction sole: Replaceable DIN Approved Vibram Soles (ISO 5355) liner: Lightweight PFP Performance Fit FSE / Heat-Ready lining: Fur footbed: FSE (Full Shock Eraser) rear spoiler: Quick Set FSE (Full Shock Eraser) buckles: Micro Adjustable Alu Buckles with Reversed Rachets macro adjust: 2 Position Screwed-on Cuff Ratchets velcro strap: 55 mm additional features: Baggy Pant Holder