The Power Racing line of Nomex underwear has been designed to offer the highest levels of breathability, comfort and protection. Ultimate fit and comfort in the driving position is achieved through anatomically designed panels and pre-formed shapes. Two different fabrics are utilized in the construction of each garment: Thin, stretch Nomex is strategically placed to provide comfort and mobility, while double perforated Nomex increases breathability in areas that are prone to hot spots. All seams are flat stitched with extra-thin thread for as much comfort against the skin as possible. Finally, Power Racing's exclusive X-Cool Silver treatment is added, helping to draw heat away from the body, while providing anti-bacterial properties to prevent bacterial growth and odors. Size: Small, Medium, Large, X-Large Color: Black, White