Tundra ESC Mens | Vivobarefoot | USA。These boots run Large! Size down! Brand new, never worn. DETAILS We’ve challenged the conventional wisdom of expedition-grade footwear, drawing inspiration from native footwear and utilising modern innovation, to thrive in the most unforgiving corners of Earth. The result is the Tundra ESC, a unique barefoot boot that’s been rigorously constructed and tested with wilderness skills experts for deep cold exploration, in which you can thrive, not freeze. Live as part of the planet, and not just on it. OUTDOOR ESC MICHELIN© OUTSOLE The wild sole for wild adventures. 100% WOOL FELT INSOLE The 100% wool felt insole is unique to the Tundra ESC. it\'s naturally antibacterial, and at 5mm thick, offers a high degree of insulation. BREATHABLE MESH Breathable, lightweight and comfortable. TOUGH RUBBER COMPOUND Strong, non-marking rubber compound for sticky grip and high-abrasion when you need it most. WARM LINING Warm lined to keep feet cosy in the coldest of climates. WEIGHT Based on a single shoe in Women\'s size: EU 38 | UK 5 | US 7 MATERIALS & TRANSPARENCY UPPER 100% Wild Hide LINING Inner Boot Felt: 100% Wool HARDWARE Lace Toggle/End: 100% TPU, D-Ring: 100% Nylon, Lace Webbing: 100% Recycled Polyester LACES 100% Nylon INSOLE 100% Wool OUTSOLE Outer Boot: 52% Synthetic Rubber, 48% Additives, Inner Boot: 100% Wild Hide