Stay warm riding at any speed with the Tec+ Ultra Boots. These Ski-Doo boots are made of durable abrasion-resistant leather and have ice-gripping soles to give you exceptional traction on and off the trails. Whether you’re riding through deep-snow or in sub-zero temperatures, our waterproof snowmobile boots featuring removable performance liners and a breathable Sympatex membrane will keep your feet warm and dry all day long. Comfort & Mobility Rugged ultra-grip outsole design. Ventilation & Temperature Management Performance liner that will provide warmth and added comfort by shaping to your foot. Limit of comfort temperature range: -58°F to -76°F or -50°C to -60°C. Weather Protection Sympatex breathable waterproof membrane. Materials & Construction Tough abrasion resistant leather outer and textile. Removable/inner liner.