GREEN HEARTImprove your ecological footprint with the sustainable GREEN HEART models from ISM. GREEN HEART safety shoes are made from recycled PET bottles. This saves new resources and significantly reduces the amount of waste. In doing so, we do not sacrifice modern, progressive design or comfort and do not compromise on safety. GREEN HEART - FOR A BETTER WORLD!Dual IMPULSE NON-SLIP OUTSOLEThe non-slip and abrasion-resistant rubber outsole resistant to 300°C, which is resistant to heat (HRO), ensures perfect ground contact at the heavily stressed areas in the heel and forefoot. Since the rubber is not sprayed all the way, wide flex grooves ensure optimal flexibility and also save weight.FAP® FLEXIBLE ANTI-PENETRATIONA flexible penetration protection made of ceramic-coated fibers protects the feet completely against penetrating objects. FIBER GLASS TOE CAPNewly developed fiberglass composite cap with more toe-free, lighter than conventional steel caps, anti-magnetic and thermally insulating.XTS TRAILCROSS TERRAIN SOLEOur XTS sole is made from a special rubber mixture. This makes them especially durable, absorbing, heat-resistant up to 300°C (HRO) and non-slip (SRC). The differently shaped and specially arranged profile elements provide grip and tread safety on all terrains and have self-cleaning properties. The sole is also oil and petrol resistant as well as anti-static.This text is machine translated.