Tecnica Sulfur GTX WS is an approach-style outdoor shoe that pairs precise, anatomical fit with waterproof protection and grippy traction for technical approaches and all-day hiking. Key attributes: Progressive blue | Blue grey | Suede leather | Gore-Tex Extended Comfort waterproof breathable membrane | Ortholite footbed for cushioning | Vibram outsole for traction | Water-repellent suede upper | Resoleable construction (Vibram Repair collaboration) | Bi-density compression-molded EVA midsole for rebound and support | Approach shoe construction | Precision fit system (AST) | Dimensions & fit: Weight: 360 g | Anatomical, precise fit (Tecnica AST fit system) | Composition & care: Upper: 1.6-1.8 mm WR suede leather | Lining: Gore-Tex Extended Comfort membrane | Footbed: Ortholite | Midsole: Bi-density compression molded EVA (high rebound compound) | Outsole: Vibram