"The prAna Luxara Racerback Bra takes a recycled nylon and LYCRA® Elastane blend and adds moisture-wicking performance and UPF 50+ protection, so it moves as easily through a hot yoga class as it does on a warm-weather hike. Four-way stretch and an elasticated hem keep the fit close without restricting movement, while the racerback silhouette stays out of the way during activity. Light support is best suited to A/C cups. Gearhead QuoteWhat Our Gearhead® Experts Are Saying:""I wore this through a sweaty vinyasa flow and it stayed dry against my skin the whole class, even during the parts where I was moving fast. The stretch held its shape afterward instead of sagging out by the end."""