evo.com | K2 Alpine Ski Boots > The K2 Anthem RX Ski Boots delivers a moderate 85 flex with traditional buckle lowers for skiers who like a familiar, no-fuss closure. A Powerfuse Spyne and Energy Interlock still put your energy right into the edges, backed by a plush LuxFit liner for comfort lap after lap. Round it out with a Gripwalk outsole and non-tapered velcro strap, and this boot is ready to handle whatever the rental fleet throws at it. LuxFit Liner Shell TPU (Thermoplastic Urethane) Last: 100 mm Performance medium fit for people with normal width and volume feet. Flex: 85 A medium stiff flex for intermediate to advanced skiers. Velcro - Tapered PVC - Two Piece | K2 Anthem RX Ski Boots 2025 - 26.5 | Plastic