NIKE Kids JR MERCURIAL VICTORY IV FG SOCCER SHOES A lightweight performance boot for use on turf surfaces. UPPER: Soft, supple synthetic leather for great ball feel. Contoured last mirrors the foot shape. MIDSOLE: Contoured sock-liner with textile top clothe delivers low-profile cushioning. OUTSOLE: Molded rubber. Innovative Vapor traction pattern designed especially for speed on artificial turf. Nike MERCURIAL VICTORY IV FG Soccer Cleats.