Running > Base Layer > Mens > Tops Brand: Asics Utilises Inner Muscle technology. This helps with deep breathing, stimulates the inner muscles of the shoulder area and features an elastic power mesh to pull the shoulder blades back and allow greater lung expansion.This stretchable top provides support for the body as a first layer to be worn during exercise. The top uses a brilliant moisture management system to leave the body drier and more comfortable by wicking sweat away from the skin. Performance is aided thanks to this top which allows for smoother movement and easier breathing.*80% Polyester, 20% Polyurethane £39.99 Add to my Running bag