Nike mercurial vortex childrens astro turf trainers these nike mercurial vortex childrens astro turf trainers have been crafted with a cushioned insole and padded ankle collar for great comfort whilst the hook and loop fastening supplies a secure fit which is easily achieved these astro turf trainers also benefit from having a micro textured upper to help enhance your control and contact with the ball and the nike swoosh branding completes the stylish look for when your re on the pitch