Polar GTX Goretex S3 Composite Safety Boot Boa Closure by Solid Gear -SG80005 The Polar GTX composite safety boot by Solid Gear is a one of a kind safety boot that combines prime Nubuck leather with Cordura Ripstop fabric and a waterproof and breathable GORE-TEX membrane. In addition, this superior boot comes with synthetic wool winter lining, BOA Closure System as well as an oil- and slip-resistant Vibram outsole. Upper: Nubuck leather, Cordura and Boa closing, Lining: Waterproof and breathable GORE-TEX, membrane, Synthetic wool, Outsole: Oil and heat resistant anti slip Vibram Rubber, Midsole: High performance EVA with TPU shank, Footbed: Breathable, antibacterial, EVA insole with, Poron pads Safety standard: EN 20345 S3, SRC, WR, HRO, Protection: Composite plate and fiberglass toecap