Coolibar Men's Ultimate Half-Zip Rash Guard, UPF 50+ Sun Protection

Product Insights & Style Tips

The Coolibar Men's Ultimate Half-Zip Rash Guard is built for sun-smart, water-loving days. Aqua Plus fabric is lightweight with a smooth slick feel and a subtle striated appearance, finished with a water-repellent coat so water beads up and rolls off. UPF 50+ blocks 98 percent of UVA/UVB rays, and Lycra Xtra Life powered four-way stretch resists perspiration and wear from chlorinated water up to 10 times longer than most spandex.

Easy on and off, the half-zip neckline and raglan sleeves with thumbholes lock in secure wear without chafing. A back hem gripper elastic keeps the shirt in place through dives and waves, while flatlock seams reduce irritation. At 30 1/2 inch body length in size Large, this rash guard layers neatly over swim shorts or under a light cover-up and stays comfy in the water or on deck; it is machine washable cold and tumble dry.

Coolibar leans into sun-smart essentials, and this rash guard mirrors that ethos with practical sport-ready style. It suits swimming and water sports such as snorkeling, surfing, and waterskiing, offering a streamlined option when protection matters. Not ideal for active fitness or moisture-wicking needs, it may feel warm under high exertion, so it stays best for all-day deck-side days or calmer aquatic moments.