100% waterproof with CT (Comfort Technology) which offers a unique scalloped top-line design to accommodate flexing. Unique Trac10 outsole design enhances slip resistance and stability underfoot. Contour heel cup molding reduces heel slippage. FOOT FORM contour insoles provide comfort for all-day wear. Sleek and contemporary, the Servus® CT Knee Boot is a great choice for general conditions and is ideal for general industrial, farm, and occupational use. Sizes 3 to 14