NIKE Mercurial Vapor VIII Firm Ground Football Boots Firm Ground Studs - for use on short-grass fields that may be slightly wet, but rarely muddy. Snug Fit - to lock down your foot for instant acceleration. Ultra-thin Teijin Synthetic Leather Upper - This aero-dynamic upper is thinner and softer made for lightweight and making slice through wind easier. Vapor Traction System - A multidirectional stud pattern designed for instant acceleration and quick cuts in any direction. As well as for improved grip, keeping you on your feet. Full-length glass-fibre plate - Reduces weight while maximising strength. It helps transfer foot-planting energy directly to the studs, reducing stud pressure and providing instant support and stability.