The O’Neill Basic Skin Sun Shirts are equipped with world-renowned O’Neill quality. The Lycra with 50+ UV protection is water-repellent and made from very lightweight fabric. UV protection is especially important in summer, but UV radiation on the water should not be underestimated in other seasons as well. Frequent sun exposure is the cause of various forms of skin damage, including premature aging and even skin cancer. O’Neill UV shirts absorb and block most of the sun's rays. O’Neill UV products are made with elastic threads that are flexible enough to tightly weave the fibers together, effectively minimizing harmful sun exposure. This second skin layer not only protects you from the sun but also prevents rashes from surfboards and provides warmth in cooler conditions. Product details: Blocks UV rays with a sun protection factor of 50+ U.P.F. 99% of harmful UV rays are blocked – all day long. Protects against annoying rashes while surfing, known as surf rash. Comfortable to wear thanks to the soft 4-way stretch fabric. Reduces fatigue caused by sun exposure. Hyperdry - dries quickly. Slim fit.