Introducing DNA Tuned, the next generation of nitrogen-infused foam created with dual-size cell technology. Larger cells in the heel provide plush landings, while smaller cells in the forefoot invite responsive toe-offs. Sleek, adaptable upper and new nitro-infused DNA Tuned cushion. Brooks Men's Glycerin Stealthfit 22 Retro Step Back White/Blue, 9 - Men's Running at Academy Sports