Natura319Aspm 001 Black RewoolyThis New Line From Asportuguesas Continues To Uphold Their Values Of Ensuring A Lower Environmental Impact. The Rewooly Upper On The Natura Is Made From 50% Regenerated Wool Fiber Made From Used Clothing That Would Otherwise End Up In Landfills. The Soles Are Made From A Unique Blend Of Cork And Rubber Providing Cushioning And Insulation. Natura Line Wool Upper Unlined 0. 75 Inch Cork And Natural Rubber Sole With A 0. 5 Inch Forepart Slip On Shoe Made