(AVAILABLE ONLINE ONLY) Time tested 100% polypropylene base layer with ribbed knit construction allows maximum stretch, durability and comfort. The long sleeved top is detailed with reinforced ribbed cuff and a lay flat neckline. The shoulder seams are tapered giving the garment added strength. All the bottoms have covered elastic waistband for against the skin comfort and a reinforced rib cuff at the ankle. The inner surface is napped (brushed) for added comfort against the skin. Flatlock seams throughout avoid any seam irritation.