FILA Roger Raglan Sleeve Mens Tennis Shirt Size:L They are also made with They are also made with GORE TEX that keeps them waterproof and breathable for rainy day runs and the Segmented crash pad will absorb shock to make every mile comfortable There is a stable platform and structural design that gently guides your stride and the lightweight mesh upper and improved lacing system offer enhanced breathability and a locked in fit One of the standout features of this tennis shirt is the use of FILA's signature Coolmax technology which helps to regulate body temperature and keep the wearer cool and comfortable even in hot and humid conditions