The Arc'teryx Silene Short Sleeve Crew Shirt - Women's is a breathable shirt for hot weather climbs. Built for climbing, capable of hiking, backpacking, and more, the Phasic FL fabric is light, airy, wicks sweat, and dries fast. Constructed with minimal seams to prevent chafing and featuring an antimicrobial treatment to resist odor, all are designed to help you perform your best in hot, sweaty conditions.