Grubs Ceramic Driver 5.0 S5 Safety Toe Cap Work Dealer Boot   Grubs CERAMIC DRIVER 5.0 S5™ uses non-metallic materials, this means it conducts neither cold nor electricity making them popular in a wider field of safety footwear. Designed to be ankle height, which allows machinery drivers to experience Grubs comfort and warmth.   CERAMIC SAFETY TOE - complies with BS EN ISO 203450 S5 without cold absorbing/ emitting metal materials.   DEFENDER™, 5mm Ballistic insole - lightweight and flexible whilst passing both BS EN ISO 20344: 2004 5.8.2 penetration standard and BS EN ISO 20344: 2004 5.9 flex resistance, without the cold of Steel.   5MM INSUFOAM-ULTRA™ NEOPRENE WITH CALF HEIGHT RUBBER - all round foot comfort and warmth   4mm rubber over the whole foot area makes it highly resistant to puncture and flex cracking.   6mm NITROCELL™ footbed - provides a soft cushioning for an athletic shoe feel. A million microscopic nitrogen bubbles that insulate the wearer from cold surfaces.   TREDZ™(DURAPRENE™rubber) outsole - superior grip on a variety of surfaces, the tread is designed to work with the action of the foot, is oil resistant and passes TM144: 1999slip resistance test.   COMFORT RATING - -20ºc to +20ºc Grubs Ceramic Driver 5.0 S5 Safety Toe Cap Work Dealer Boot