Thumbnail "The natural rubber and PU sole collection provides comfort in extreme working conditions. Incorporating the features and benefits of the natural range, the dual density sole construction includes polyurethane for cushioning throughout the midsole and rubber nitrile for heat resistance to 300°c on the outsole. The natural rubber sole provides the benefits of Bata’s Tunnelsystem® and multi direction slip resistance. Oil resistant area and is recommended in application where contact temperatures exceed 130°c."