Dalbello V.I.R.U.S. Tour ID Alpine Touring Ski Boots: Uniquely engineered for AT/BC/Freeride skiing, the Dalbello V.I.R.U.S. Tour ID Alpine Touring Ski Boots have all the precision and power of Dalbello s top performing Krypton boot. Innovative and original patented technology makes it exceptionally functional for walking/touring/climbing in the backcountry. Part of the Rider Development Project in development for more than 3 years by a team of Dalbello designers/engineers led by Glen Plake, V.I.R.U.S. models have been tested all over the world: Himalayas, Alaska, Andes, Alps, Sierras. The V.I.R.U.S. Tour is for maximum versatility, ultimate performance, and function up or downhill.