Sorel Explorer™ III Blazer Waterproof Boots. The Explorer™ III Blazer Boots are built to withstand any challenge. With a focus on resilience, strength, and durability, these boots are your perfect companion for every journey. Fully waterproof suede upper with textile collar and tongue. Laces not waterproof. 100g insulation. Removable molded EVA footbed with textile topcover. Lightweight molded Livelyfoam midsole. DUOTREAD™ rubber and ground contact EVA outsole. 5 1/4" shaft height. 50" lace length. Imported.