Super Light: 53% 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; Compatible with all Spark R&D bindings and the Burton Hitchhiker; Completely Waterproof: Pillow Line straps will not take on water weight in warm conditions, or freeze when temperatures drop; Snow simply doesn't stick; Stiff or Flexible: Surge ankle straps have a wide, asymmetrical footprint around the boot for incredible all-around support; Solid One-piece Construction: No glue, stitching, rivets, or foam to break down over time; Weight: 8.80 oz/pr (252g) - Medium (includes buckles, ladders, adjusters, and hardware); In the kit: Assembled left and right surge pillow line ankle straps with buckles, ladders, and adjusters; Also comes with hardware for attachment: 4x Ankle Strap Washers, 4x M5x12mm Ankle Strap Screws, 4x Ankle Strap T-nuts