This women's half-zip midlayer is super lightweight and comfortable. The four-way-stretch fabric is fast drying, moisture wicking and has a premium finish for a fresh feel from your first swing to the last. A UPF 50 treatment helps keep you safe from the sun's harmful rays, and beautiful mesh inserts are anatomically placed on the arms for ventilation and visual interest. The sport fit skims the body for a flattering, fitted look.