Baby Blues! This lightweight microfiber long-sleeve sun shirt features permanent UPF 50+ sun protection. High quality stitching, and a tapered fit ensure sleeves remain pushed up and don’t slide down. Microfiber technology is extremely soft and is designed to flex with your body and mitigate stretching out. Built in zinc odor protection keeps you smelling fresh. The perfect shirt for the beach, hiking, boating, skiing, and everything in between.