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