Nike mercurial vortex cr7 astro turf trainers childrens the nike mercurial vortex cr7 astro turf trainers are ideal for any youngster to wear whilst practicing their skills the trainers benefit from adjustable fastening that sits across the top of foot for a secure comfortable fit the trainers are finished off with nike swoosh branding and cr7 detailing on the feel for a stand out look on the pitch trainers childrens astro turf adjustable strap fastening padded ankle c