The Running Band's Sun Shell sun-protective, ultra lightweight moisture-wicking performance fabric is one step ahead of the rest. The 4-way stretch of this anti-microbial fabric keeps even the most enduring runner fresh and dry through tough sun and heat conditions. This versatile headband can be worn in multiple ways to conform to your activity and demands. Quick drying, UPF 50+ sun protection - blocks 97% of UV rays. Perfect for running, mountain biking, cycling, hiking, kayaking, climbing, fishing, backpacking, travel, yoga, and many more outdoor adventures. Material: Polyester, Spandex.