The O'Neill 24/7 Tech Long Sleeve Crew Surf T-shirt helps keep you in the water longer by greatly reducing fatigue and skin damage from the sun's dangerous UV rays. O'Neill crafted the 24/7 Tech L/S Crew from a breathable and quick-drying poly/spandex composite, all in a relaxed fit that makes this puppy wearable in and out of the water. No post-session changing required.