On an early morning climb, hike, or run, and the heat's already working against you? That's when the lightweight Women's Beta Tank Top comes in handy. Quick-drying, moisture-wicking AirExchange fabric offers exceptional breathability and keeps you comfortable even if you break out in a sweat. Its sleeveless style won't weigh you down or interfere with mobility, and the mesh racerback detail blends in with your sports bra.