Caterpillar Men's 8 Wide Threshold Waterproof Steel Toe Full Grain Leather Upper Boot. This boot features a lace-up closure, a moisture wicking mesh lining, a moisture wicking lining, a cement construction, a slip resistant sole, and an electrical hazard rating.The Threshold Waterproof work boot is made with seamed seals for water protection, an incredibly slip resistant outsole that exceeds ASTM standards and a full grain leather for extreme abrasion resistance.