UPF 50+ Sun Protection: UPF 50+ professionally certified sunscreen fabric, can protect your skin away from UVA / UVB rays with safer and cooler on outdoor sports. Cool & Dry: Quick-Drying and Lightweight fabric with excellent moisture-wicking and breathability keep you cool and dry while outdoors and workout. Comfortable & Skin-friendly: Tag-free collar and Flat-lock seams combined with soft fabrics can reduce friction and improve comfortable and skin-friendly. Stylish Design: This sun shirt features 1/4 zipper and stand collar design preventing your neck form sunburn in the sun,easy on/off. The thumb holes keep the sleeves in place and give extra coverage for sun protection. Perfect for: This women's long sleeve UPF 50+ shirt is perfect for swimming, rashguard, hiking, running,surfing, cycling travel and a variety of outdoor activities.