AirFlex is the ultimate performance layer and our lightest weight jersey. This versatile all-purpose layer can be utilized as a base layer or stand alone. It features extreme moisture protection, body temperature management, and odor resistant properties. Superior wicking and highly breathable qualities makes this garment fast drying and easy care. Great stretch and silk like softness promotes comfortable and free movement. Sized to fit close to the body for a good fit under your jersey. If you prefer a looser fit, we recommend sizing up.