Shoes For Crews Fergus S3 Waterproof Unisex Safety Shoe. The shoe has a superior slip and clog resistant outsole TripGuard. It is waterproof with a nano composite toe cap protective to 200 joules. The shoe is puncture resistant, metal free and resistant to fuel and oil.There is a zip to easily put on and take off the shoe. Removable cushioned insole (Recycled EVA). Recycled Polyester Lining.