Nike Mercurial Vapor XI Firm Ground Football Boots - Electric Green/Black/Flash Lime/White - Kids The Kids' Nike Jr. Mercurial Vapor XI (FG) Firm-Ground Football Boot combines a lightweight contoured nylon plate with a revolutionary stud configuration and embossed ridges in the upper to create a boot for today's fast-paced game. Details: • Embossed horizontal ridges increase ball awareness and control • Lightweight compressed nylon plate is contoured to mirror the foot's shape • Low-profile toe box helps you get under the ball • Anti-skid top cloth grips the foot to increase traction inside the boot • Synthetic Leather