More than a simple tank top, the Salomon Men's EXO S-Lab Tank Shirt offers muscular support for the long run and ventilation for scorching-hot conditions. Exo technology is compression apparel designed to help your muscles work more efficiently so that you can run longer, run easier, and recover better. With specific levels of support and warmth for different needs, Exo is the only compression apparel that helps athletes of every level get the most out of their workouts. Reflective branding front and back. Actilite fabric.