Details Atomic Redster C9 is a boot purpose-built for all you long-distance lovers out there. It's one of Atomic's fresh stable of Redster racing boots for classic cross-country skiing, packed with worldcup tech. That includes a 100% Carbon Heel Counter for awesome support and power transmission, plus a Prolink racing outsole with just the right flex for intensive classic skiing. The boot comes with a precise race fit and a 3D Race Lacing System that perfectly wraps your foot, with Live Fit molding to your footshape for an instant fit and epic feel. And to keep your feet cool and dry Atomic has invented Atomic Air Control: a combination of two breathable water-repellent membranes that allow moisture to escape but prevent water and snow from getting in. Your ultimate companion, whatever the challenge. Skiing Style Classic Sole Type Prolink Racing Classic Compatible with all 2-rail bindings on the market Last Race Fit: 102mm Liner MyCustomFit: A clever addition to Atomic boots - simply heat the boot with a heater, put it on and it will mold to your foot for a completely personalized liner in a matter of minutes. AAC - Atomic Air Control Closure Precision Closure: The new Wrapping Lace keeps the fit solid. Quicklace adjustment lets you fine-tune without the need for a ratchet. Upper Wrapping Lace with Dissociated Quicklace AAC - Atomic Air Control: A breathable water-repellent membrane combining Ripstop and Surfstretch materials. Helps you regulate temperature and lets your foot breathe. Outsole Prolink Racing Classic Details Lace Cover with Sideway Waterproof Zip LiveFit: These zones automatically adapt to your forefoot shape providing instant comfort, improved feel, better blood flow, warmer toes and happier feet. Seamless Bonding Heel Foam Liner Adjustable Heel Strap Carbon Heel Counter Weight 830 g per Pair (Size 8) Atomic Redster C9 Classic Boot 2021-22