he Najak shoes are easy to put on thanks to their zipper closure and are lined with warm textile material. The structure also includes Halti's DrymaxX membrane, which protects feet from moisture. For several years now, Michelin has been producing soles suitable for winter use. The rubber compound in these soles remains soft and flexible in freezing temperatures, and the tread pattern helps improve grip. Note! When using grippy-soled shoes, be aware of their grip limitsthese are not studded shoes. - Normal fit - Upper material made of softshell fabric from recycled fibers - DrymaxX membrane for water protection - Warm textile lining - Flexible neoprene collar - Lightweight and flexible Phylon midsole for shock absorption - Removable insoles containing Bloom fiber made from algae - Michelin IC winter traction sole