-Heat resistant outsole (HRO): The outsole resists high temperatures up to 300°C. -Heat insulated (HI): Heat insulated (HI) safety footwear is usually worn in hot temperature environments. It limits the increase of temperature inside the shoe. -Waterproof (WR): Waterproof footwear prevents liquids to enter into the shoe. -Cold insulated (CI): Cold insulated (CI) safety shoes keep your feet warm. They are worn in cold environments. -Environments: Cold environment, Muddy environment, Uneven surfaces, Warm surfaces, Wet environment, Dry environment, Snowy and icy. -Maintenance instructions: To extend the life of your shoes, we recommend to clean them regularly and to protect them with adequate products. Do not dry your shoes on a radiator, nor nearby a heat source.