Open Back: Slightly loose fit creates a breezy feel with more cooling as your run heats up. The Open back not too exposed, but can show your cute sport bra. Suitable for all ages of women
Thumb Holes Design: Thumb holes design can keep the sleeves from shifting or flapping in the wind, help Keep Your Sleeves In Place and Hands Warm, add a little more coverage in cool weather.
Material: Breathable, Strechy, Lightweight, feel relax and comfortable when you wear it