Winter Running shoe in waterproof Gore-Tex® with water repellent gaiter and integrated AT Grip Fixed Spikes for maximum grip. Designed for extreme use on icy, extremely slippery terrain. Water repellent, stretch Sock-Shield Gaiter: Comfortable, high performance slip-on construction with integrated protective gaiter to wrap around the foot completely eliminating empty volumes and additional gussets: prevents the entrance of stones, mud and snow Fusion Gate Technology, a high frequency reinforcement structure with Single Cord Lacing System that allows perfect wrapping and volume regulation Protective TPU tip Outsole in FriXion® Blue compound with integrated AT Grip Fixed Spikes for maximum grip Integrated Lace-pocket, retractable lace pocket Gore® Flex Construction membrane that makes the shoe very flexible Drop: 6 mm Uppers: Water repellent, abrasion resistant, single mesh + Sock-Shield Gaiter+ Fusion Gate Technology Lining: Gore® Flex Construction Midsole: Shock absorbing, injected