NIKE Junior Mercurial Victory III Astro Turf Football Boots Synthetic Leather - Soft and supple, this is built for stability, ideal fit and better ball control. Contoured Last - The last mirrors the foot shape for a premium, low-profile fit Turf rubber Studs - For use on synthetic surfaces. Contoured sockliner - with a Phylon heel wedge for lightweight, low-profile cushioning. Traditional Lacing System - For a secure fit.