: Alpina Comp Classic Nordic Race Boot - Unisex : Sports & Outdoors. : Alpina Comp Classic Nordic Race Boot - Unisex : Sports & Outdoors. Carbon injected heel cup provides elite level control and stability 。 Waterproof/breathable 4Dry upper is backed with Thinsulate for warmth 。 Proprietary sole combines a smooth forward flex yet maintains downhill control 。 Compatible with NNN. and from what everyone knows about the fantastic fit of Alpina race boots we are expecting good things 。 。 。. especially with the added layer of Thinsulate. The sole is an Alpina proprietary design, and Prolink bindings 。 Alpina XC race boots are known for excellent fit for men and women 。 The new Comp Classic Nordic race boot from Alpina is clearly inspired by the highly regarded ECL Pro. but at a much more affordable price. Unlike most boots in this price point. the heel cup is not just nylon but is a carbon infusion for outstanding torsional and lateral stability. A newly developed waterproof and breathable upper keeps your feet dry and warm, Turnamic.