The Tri-Layer Salopettes 25K Pro from MATRIX is an updated version of the well-known RS20k salopettes. This updated version contains the following features: Reinforced three-layer nylon outer with PU coating, 25000mm waterproof, 3000gr/m2 breathable, All seams are fully taped, Reinforced seat and knee panels, All outer zippers are YKK and waterproof. Anti draft flaps on all zippers, Adjustable, elastic shoulder straps, Partly elasticated waist, Legs with waterproof YKK zippers for easy donning of boots, Adjustable ankle straps, Available in sizes S, M, L, XL, XXL, XXXL and XXXXL.