The Romfh Kids Chill Factor Sun Shirt is made with Romfh's exclusive light and breezy Chill-factor fabric. The Chill-factor Sunshirt provides cooling comfort along with sun protection and newly added POWERFRESH, an antimicrobial treatment to keep your zip-mock sunshirt smelling fresh as a daisy. Fun, bright colors, sheer mesh under sleeve panels and sleeve embroidery. Machine washable.