Covering up that inch of bare ankle — between your leggings and your sneakers — is essential. Instead of your go-to ankle socks, try the Bombas Women's Performance Running Quarter Socks ($16). The Hex Tec fabric won't feel bulky in your sneakers and has moisture-wicking technology to keep your tootsies dry. And as with any Bombas sock, a pair is donated to a homeless shelter or community organisation with every pair bought.