adidas F5 FxG - Boys' Grade School The kind of fast that strikes fear on the pitch. This is a superb entry-level cleat for players who demand speed, comfort, and touch. Soft Bravo synthetic material combines precise touch with light weight. Synthetic upper is easy to clean. Die-cut EVA insole for light weight and comfort. adiFit measuring tool for accurate fit. New flexible ground tooling intensively tested and suitable on FG, HG and AG.