These Grand Prismatic socks take one of the most scenic spots in Yellowstone National Park and put it directly onto your feet! The Grand Prismatic pool is packed with pretty microbes that naturally arrange themselves into a round rainbow with a deep blue center, shown on these Yellowstone men's socks with bears and trees in the foreground and a wide open sky up above. Fits men's shoe sizes 8 to 13. 49% cotton 48% polyester, 3% spandex. Made in Korea.