Updated last for improved fi t and comfort. Isotex waterproof footwear - seam sealed with internal membrane bootee liner. High performance nylon woven Endurance Mesh and PU upper. Hydropel water resistant technology. Neoprene collar for added comfort. Deep padded collar and tongue. Rubber toe and abrasion resistant heel bumper. Moulded EVA comfort footbed. Stabilising shank technology. New XLT sole unit for improved traction and self cleaning.