The Founder may be Cat Footwear's most comfortable boot ever. This classic mid length boot is built on a light outsole that after a day of hard work feels like you're wearing nothing at all. Pollyou sock liner Blown EVA midsole Cement construction. Uppers: Nubuck/Full Grain Leather. Lining: Nylon Mesh. Sole: Rubber. Fastening: Lace Up. Fitting: Standard.