These are officially licensed DC Comic Flash pajama pants! The Flash is one of the founding members of the superhero team, the Justice League, and the self-proclaimed fastest man in the world. If you're a fan of DC Comics or the Flash in general, you'll love these high-quality pajama pants! They feature a detailed all-over pattern of his classic red and yellow Flash lightning logo designs. They are made of a soft 100% polyester fabric. They have an impressive size range available from Small to 5X-large!