Puma Ultra Nitro 7 Pro FG 109232 01 Football Boots. Semi-professional men's football boots from Puma provide a perfect fit and incredible speed on the pitch. The Arrival Pack collection. Specifications: Lightweight double mesh upper. Streamlined, lace-up construction. Innovative Nitrofoam™ technology - nitrogen-infused foam for lightweight, responsive cushioning. Speedsystem 2.0 outsole - reacts faster to every push. FastTrax 2.0 studs - complement the more rounded studs. FG - suitable for use on firm natural surfaces. The upper of this boot is made from at least 30% recycled material.