Nike Mercurial Victory III Firm Ground Soccer Boots Synthetic Leather - Soft and supple, this is built for stability, ideal fit and better bal Contoured Last - The last mirrors the foot shape for a premium, low-profile fit Contoured sockliner - with a textile cloth cover for low-profile cushioning and comfort. Traditional Lacing System - For a secure fit. Firm Ground Studs - for use on short-grass fields that may be slightly wet, but rarely mud