Atomic Pro C1 is an ideal all-round boot for classic cross-country skiers, particularly if you want a boot to help build confidence and technique. It comes with a mid-cut which provides a little extra ankle support. It also features our 3D Lacing System: the heel and lacing system are connected, so as they tighten they wrap the foot perfectly for optimum heel hold. For extra comfort the C1 has an Aero Vent on the ankle made from breathable mesh to keep your feet cool and dry, and Live Fit foam inside the boot molds to your foot for an instant individual fit.