Neotane material: proprietary polyurethane formulation: light, flexible, long lasting, Ultralight quick boot with pull-on loop, Wider fitting, Safety: steel toe cap and midsole (S5) for optimal protection *100% waterproof for warm and dry feet, Multipurpose, slip-resistant outsole: SRC certified, Abrasions-resistant, deep treads for longer life, Kick off spur: get out your boots with ease, Standard EN ISO 20345:2011 S5.SRC.CI