Add sunblock along with an Old Navy boys rash guard and know he is protected from the sun and abrasion. An Old Navy rash guard dries quickly for added comfort and all day protection. You'll find graphic summer scenes, popular skull designs and many more to enhance his current swimwear. We also have those hard to find husky sizes to accommodate every boy in your family. He will be geared up in style with our assortment of colorful, comfy boys rash guards.