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.