Tingley's Premier G2 boot is tough, yet extremely comfortable. The Premier's unique blend of high molecular weight PVC resins and specialty additives offers superior chemical resistance to concentrates of fats, certain acids, hydrocarbons, alkalis, and other chemicals. Injection molded seamless construction provides 100% waterproof protection. Calf Relief Expansion (CRE) expands up to 1.5 inches for more calf comfort. Soft and flexible upper for all day working comfort. Chevron-Plus outsole provides excellent slip resistance on wet-contaminated and wet-clean surfaces and has more cleat material for longer service life. Extra thick, removable contour cushion insoles absorb moisture and shock, and provide outstanding comfort.