ERS 4000 Chalk, Kinetic Blue & Black - Premium Chalk for Gymnastics, Rock Climbing & Weightlifting | Non-Toxic, Dust-Free Grip Enhancer for Athletes & Fitness Enthusiasts

A bringback from early '90s Reebok running heritage, these ERS 4000 shoes are as legit as it gets. ERS stands for Energy Return System and its midsole technology in its truest form. A retro mix of nylon, suede, and synthetic give texture and depth to the upper. It's like you've already won.