Wear it alone or under splash wear for added insulation, the NRS Men's H2Core Long-Sleeve Rashguard is purpose-built to provide advanced protection against the sun and abrasion and breathes freely for warm-weather layering.. . . . . Nylon/spandex technical fabric wicks moisture away from the skin and dries quickly for cool comfort on the water.. The silky exterior and interior ensures fluid, athletic performance and feels soft and cool on your skin.. Hidden quarter zipper adds a little flair while creating an easier on-and-off experience.. Form fitting for comfort under a life jacket or technical outerwear.. Deliberate seam placement delivers friction-free zones under the arms for paddling and rowing comfort.. Thread the drawstring of your board shorts through the Hemloop to keep the Rashguard from riding up.. UPF 50+. Weight: 8 oz. Collections: Rashguard. Fabric: 6.3 oz. nylon/spandex blend. Collar: Mock. Fit: Form fit. Imported.