Atomic Redster C7 is one of the best-selling classic boots in the Redster stable: an awesome cross-country racing boot for after-work training and weekend racing. Like all racing boots, its focus is on stability, power transmission, fit and comfort: the qualities you need to stay fast and energy-efficient. The External 3D Heel Counter keeps you stable for confident power transfer. The Prolink outsole gives just the right flex for classic skiing (and works with all 2-rail bindings including NNN and Turnamic). Atomic Air Control keeps you cool and dry with two breathable membranes that let moisture escape while stopping water and snow getting in. And the fit combines Live Fit, a precise race fit and a 3D Race Lacing System to keep your feet perfectly wrapped.