Shop the Nike Mercurial Vapor 15 Academy 'Hyper Turquoise' DJ5631-300. This is a pair of adult male trainers from Nike, part of the Mercurial Vapor 15 Academy series. They are a size UK 12 and feature a blue colour family with black as the secondary colour. Upgrade your sneakers collection today! Closure: lacing. Toe type: round toe. Heel type: flat heel.