Old Navy Set includes three pairs of liner socks. Ankle length. Rib knit openings keep them in place. Notched heel and toe seams. Mesh tops allow fabric to breathe. Comfy, combed cotton poly blend with a bit of spandex for fit. Superior wicking keeps you dry & comfortable Active performance gear, available only at stores and online. White color only: 72% cotton, 25% polyester, 2% spandex. Medium Heather Gray color only: 56% cotton, 41% polyester, 3% spandex. Black color only: 59% cotton, 38% polyester, 3% spandex.