The rugged 16" Economy Knee Boots provides great protection in muddy, grimy jobsites. They are made of 100% waterproof, abrasion-resistant rubber. A slip-resistant Diamond Bar outsole provides excellent traction. Tried and true, LaCrosse 16" Economy Knee Boots performs day in and day out in the dirtiest environments. Electrical hazard protection meets ASTM EH standards. Under dry conditions EH protection must be able to endure the application of 18,000 volts at 60 hertz for one minute with no current flow or leakage current in excess of 1.0 milliamperes. Natural hand-laid rubber in the upper resists water, bases, acids, alcohols, diluted-water solutions, cuts and punctures. Double-layer, abrasion-resistant toe guard. Removable EVA insoles provide long-lasting cushioning. Stabilizing steel shank provides maximum stability. Slip-resistant Diamond Bar outsole for excellent traction on varied surfaces. Height: 16". Weight: 40 oz. per boot. Upper: Natural rubber. Outsole: Diamond Bar rubber. Insole: Removable EVA. Soft toe.