Super Light: 46% lighter than their fabric strap predecessors. On the skintrack, every gram counts; Durable: Can withstand the abuse of touring and riding in the backcountry; Comfortable: Thin, flexible pillow faces are the only parts that contact the boot. Thicker ribs and attachment points are held off the boot to maintain comfort. Soft and firm at the same time in a single piece; Completely Waterproof: Pillow Line straps will not take on water weight in warm conditions, or freeze when temperatures drop. Snow simply doesnt stick; Stiff or Flexible: Arc ankle straps have a smaller footprint than Surge and feature a flex window for max agility; Solid One-piece Construction: No glue, stitching, rivets, or foam to break down over time; In the Kit: 4x ankle strap washers, 4x ankle strap screws, 4x ankle strap t-nuts