Ultra-thin synthetic Teijin upper for a durable, snug fit and superior feel. Contoured speed last mirrors the foot shape for the ultimate fit. Contoured sockliner at the midsole for cushioning to reduce stud pressure. Full-length glass-fibre chassis for responsive energy and a firm yet flexible fit. Multidirectional stud pattern at the outsole with vapor traction island for quick cuts. Snug yet flexible, the Mercurial Vapor delivers a glove-like fit. Ultra-lightweight synthetic leather adjusts to the foot shape and works to keep feet locked in place. Cushioning at the heel provides a more comfortable feel and helps keep the heel from slipping. This generation of the iconic Vapor has a glass-fibre outsole engineered for responsiveness and explosive bursts of speed. The kind of speed that changes matches. This outsole is incredibly firm, yet flexible, helping to reduce stud pressure. Created for dynamic changes of direction and optimal traction on firm-ground fields, the outsole features vapor traction islands for better grip and quicker cuts. Firm-ground (FG) studs for use on short-grass fields that may be slightly wet but rarely muddy.