The Fast-Trac Apex NITRO is a lightweight trail running shoe designed to take you wherever you want to go, from loose gravel and muddy track to technical mountain trail. It has a whole load of tech to get you more connected to your run – including a responsive full-length NITRO foam layer in the midsole and a PUMAGRIP ATR outsole that provides multi-directional traction on all surfaces. Fast-Trac Apex Nitro Running Shoes