KEEN UTILITY. 1022110. PHILADELPHIA 6 INCH WATERPROOF BOOT. CASCADE BROWN BLACK LEATHER. The KEEN Utility Philadelphia Waterproof Boot will keep your feet safe and comfortable all day long. Featuring a breathable KEEN.Dry membrane this waterproof boot ensures your feet stay dry and comfortable. The heat-resistant rubber outsole provides safety while the removable metatomical polyurethane footbed offers maximum cushioning for all-day comfort.