Thermal insulated safety rubber boots to protect against water intended for work in hard terrains under extremely cold conditions (up to -40 ºC). ČSN EN ISO 20345: 2005 certified. Boots made from special rubber mixture with an increased content of natural rubber to achieve maximal flexibility and elasticity under extremely cold conditions. Thermal insulated properties are given by neoprene lining with thickness 6 mm. Also maintenance and drying after work are easier.