These slippers have a 100% boiled wool upper. Crafted with a contoured, wool/latex footbed that molds to your foot for customized comfort, and the wool felt sole with traction dots that offers comfort all over the house. Live in luxury in a pair of Haflinger Freddie. The Haflinger philosophy is simple and logicala healthy foot needs the proper environment and a properly designed walking surface to stay healthy. Haflinger clogs and boiled wool slippers pay particular attention to the needs of your footspace to expand and contract freely and effectively; breathable, all-natural materials; a footbed and spacious toe box that follow the natural form of the foot; and an impact surface that compliments and fortifies human foot design. Have a nice Walk!