Unisex Shoe See photo for size chart Lightweight And Soft Barefoot Shoe, Sorrel, You Can Feel The Softness Of The Grass With Every Step. (Sustainable Material) Lining: Mesh Sole:Rubber Sole Thickness: 4 mm Thick Hobibear Rubber For Flexibility And Slip Resistance Not Waterproof, But Quick Drying Polyurethane foam insoles are popular sustainable materials that do not contain harmful substances and fully comply with the requirements of international environmental organizations. They are usually recyclable and can also biodegrade within about five years. They can be recycled and processed into recycled cotton.