CUFFS The skating technique requires more lateral ankle support for improved performance. So the boot has an externally fixed cuff, which provides rigidity and lateral stability to the ankle, to gain better responsiveness with optimal grip. Cuffs are made of carbon (which are extremely lightweight) or plastic. All are anatomically and ergonomically designed, employ a 'Velcro' power strap (some with EV-padding) and are attached to the heel counter with rivets or screws. CARBON A light anatomic carbon cuff delivering exceptional stiffness, lateral stability and responsiveness. Equipped with a power strap for optimal ankle fit, superior comfort and adjustable ankle grip. NNN XCELERATOR Top racing sole with neutral foot position provides more direct power transmission; light, with optimised flex and torsional stiffness; different hardnesses for skate and classic shoes; PEBAX-made.CARBON + TPU Carbon stabilizer provides torsional and heel counter stability inside and out; in combination with TPU adapts to various types of heel shape. All combine to deliver excellent grip and foothold. 4DRY PVC 4DRY WEAVE 4DRY PVC with its perforated PVC construction and 4DRY WEAVE with its woven textile configuration makes the boot water impermeable and allows it to breathe. Water vapour passes out of the boot, so the boot interior stays warm and dry for maximum comfort. LACING 45° A braid angle of 45° relative to the longitudinal direction of the shoe improves the torsional stability of the soft part of the shoe. This ensures a tight fit between the shoe and the foot in the rotation phase of the shoe toward the inner side when skiing the skating technique. ANATOMIC FOOTBED Insole contributes significantly to the vertical stability of the foot, providing a high level of comfort and improves the thermal insulation of the shoe. THINSULATE INSULATION “Thinsulate” insulation provides up to twice as much thermal shoe insulation. Even under extremely cold and high-humidity conditions it provides the foot with maximum thermal comfort. ELASTIC INSERT For gaiter adaptability to various lower leg shapes.