If you are looking for a rashguard which you can use to defy both the sun and the water, this Sun Short Sleeve Skin by O'Neill is a good choice. Thanks to O'Neill’s Hyperdry technology the fabric dries very quickly, which is ideal when surfing. But the material also has a UPF50+ rating, which means it stops 98% of all UV rays. Your skin will not suffer from sunburn underneath the UV shirt, even if the fabric gets wet. Furthermore, this shirt is made of recycled fabric and stretches well, so you have plenty of freedom of movement. This way you can concentrate on surfing without worrying about the rest!