Men's PUMA Velocity Nitro 4 men's all black shoes is an inert gas meaning

is an inert gas meaning it does not readily undergo chemical reactions with other substances

whether it's in or outside the house

Featuring a determined runner [you] on the track with another athlete in the background

It also improves the durability of the outer traction plate

Body: 82% polyester/18% spandex

Men's PUMA Velocity Nitro 4 men's all black shoes is an inert gas meaningRunning feels different for everyone and that's exactly how it should be. Whether you're chasing a personal record or just chasing the feeling, Velocity 4 is built to move with you. Any runner, any time, any distance, it can endure, perform, and exceed expectations. Our lightest Velocity yet features a full length NITROFOAM midsole, improved breathability with new mesh in the upper, and a PUMAGRIP outsole for the best traction in the game.