Made from recycled polyester yarns, the NEW inov-8 TRAIN ELITE MID is a comfortable, warm and versatile piece for all year-round use.STAY WARM, PROTECTED AND COMFORTABLE: Protects against the cold by trapping air close to the body. Super-soft fabric for an unrivalled mid-layer feel.FREEDOM OF MOVEMENT: The fabric's spandex content ensures an unhindered running motion in the upper body and retention of shape when stretched.VERSATILE: Wear it on top of a base-layer and/or under a shell for ultimate protection. Perfect for training days as well as pre and post sessions.This base layer also features a deep centre front zip for a ventilation option. THUMB LOOPS: Integrated thumb loops.