Tecnica Sulfur GTX WS is a low-cut approach shoe built for technical approaches and all-day hiking. It pairs a GORE-TEX waterproof membrane with a Vibram Megagrip outsole for reliable traction and weather protection. Key attributes: Gray | Suede leather | GORE-TEX waterproof breathable membrane | Vibram Megagrip outsole for high traction | High-rebound EVA midsole | Lightweight (360 g) | AST precise-fit technology | Anatomical Ortholite footbed | Bi-density compression-molded EVA midsole | Resoleable design | Low-cut approach profile | Climbing-zone toe | Pull loop at heel | Dimensions & fit: Weight: 360 g | Upper thickness: 1.6-1.8 mm | Available sizes: UK 3.5-8.5 | Precise anatomical fit (AST technology) | Composition & care: Suede leather upper | GORE-TEX lining | Ortholite footbed | Bi-density EVA midsole | Vibram Megagrip outsole