UPF 50+ Sun Protection: Designed with UV protection technology, our long-sleeve rash guard offers UPF 50+ sun protection, shielding your skin from UVA and UVB rays during outdoorCool & Dry: Quick-Drying and Lightweight fabric with excellent moisture-wicking and breathability keep you cool and dry on running or workoutComfortable & Skin-friendly: Tag-free collar and Flat-lock seams combined with soft fabrics can reduce friction and improve comfortable and skin-friendlyBeautiful & Practical: Slim waist and longer hem can highlight your figure while protecting you from cold or sun, so it can be worn as a sweatshirt or undershirtAn Excellent Choice of Shirts: this women's long sleeve shirt is perfect for swimming, rashguard, hiking, running, cycling travel and a variety of outdoor activities