Built to protect the skin against abrasion, the NRS Men&';s H2Core(TM) Rashguard Short-Sleeve shirt breathes freely for warm-weather comfort and provides advanced sun protection. Nylon/spandex technical fabric wicks moisture away from the skin and dries quickly for cool comfort on the water. Deliberate seam placement delivers friction-free zones under the arms for paddling and rowing comfort. Form fitting for comfort under a life jacket or technical outerwear. The silky exterior and interior ensures fluid, athletic performance and feels soft and cool on your skin. Thread the drawstring of your board shorts through the Hemloop to keep the Rashguard from riding up. UPF 50+ SPECS: Weight:- 7 oz Collections:- Rashguard Fabric:- 6.3 oz. nylon/spandex blend Collar:- Mock Fit:- Form fit Gender Sizing:- Men Features:- UPF 50+