NWT Bombas BEE BETTER Crew Socks - Black with Gray logo - Size Small // Womens 4-7.5 // Kids 9-12 // - 4 pair of Bombas Mid Calf Crew socks - 83% polyester, 5% cotton, 5% nylon, 5% rubber, 2% spandex Bombas uses the softest long staple yarns from the best cotton and merino wool producers in the world. We believe in the antimicrobial and moisture-wicking properties of high-quality, natural fibers.