The Assos Ultraz Winter FUGU Socks are a newly developed, ultra-insulated winter sock designed for extreme cold. Crafted from a wool blend, these socks deliver exceptional warmth with added insulation in key areas for enhanced protection. They are breathable, incredibly soft, and engineered to keep you comfortable in the harshest winter conditions. Inspired by the warmest and most protective winter gear in ASSOS history, the FUGU socks feature micropockets of warm air under your booties, with extra insulation across the toes and front. The tall 31cm (16in) cuff provides full coverage, closing any gaps between the socks and winter tights.