PSD Staple NASA Space Galaxy American Flag Mens Boxer Briefs XX-Large Underwear - E11911021-BLK-XXL. PSD Underwear stands for high-quality athletic underwear combined with on-trend designs. Top athletes around the world love PSD Underwear for the support and performance it displays from everyday activities to crunch time in the nba finals. No two people are the same. Everyone is unique. Our passion is to create a product that is as bold and creative as the people that wear them without compromising performance. Made with 88% polyester and 12% spandex. Breathable athletic feel. Contoured sealed pouch. Flex fit flatlock seams. Tagless/seamless back. 7 inch inseam. Wide soft elastic waistband. Color: Black. Graphic on: Front.