Comfortable v-neck featuring Climachill. Climachill fabric is constructed using innovative fibers that enhance performance. On the skin side of the fabric, the fibers have a flat shape that enhances the cool touch of the fabric's surface. The flat shape helps to evaporate moisture close to the skin, while utilizing channels to move excess moisture through the fabric. FORMOTION: ultimate performance and comfort while in motion. UV protection (UPF 25): protection against harmful radiation.