The Base B610 Rafting Top Saftey Boots are comfortable, lightweight and flexible. We stock them in sizes 7 to 12. It has a composite toe cap. Protected mid sole. Metal free. With Dry'n Air technology. S3 SRC. EN-ISO 20345: 2011. Airtech, a patented process which aerates the polyurethane used to injection mould soles with thousands of little air bubbles which makes a shoe up to 250g (30%) lighter which takes less effort to lift and reduces foot fatigue by up to 48%. tpu-Skin is a patented micro-thin skin which seals the outer sole it reduces the overall thickness and weight of the sole which increases flexibility and movement resulting in improved comfort. Smell Stop is an anti-odour lining, that prevents bacteria and fungus responsible for odours, from taking hold anywhere in your shoes. The anti-odour lining is scented which helps keep your shoes smelling fresh. A patented ventilation system which uses the foots natural movement as a pump to circulate cool air down through holes in the inner sole of the shoe and along specially designed airways before being expelled. This means that air circulates freely around the shoe and any moisture in the shoe is absorbed and expelled by the cool air. As a result it prevents feet from becoming sweaty and other associated conditions such as athletes foot. It keeps feet cool and feet and shoes fresh. A metal free toe cap, which is as strong as conventional metal designs and much thinner than other non metal toe caps on the market, the SlimCap is non-magnetic and thermally insulated, tested up to 200 Joules. Will not set metal detectors off if working in a secure environment. Thermal insulation will help keep you warm or cool.