Women's Trail Air Short Sleeve Jersey Crew neck collar keeps things casual and comfortable. Deflect™ UV 30 protects your skin from harmful, ultraviolet rays. Fabric Content: KNIT 87% POLYESTER, 13% SPANDEX VaporRize™ fabric is made from our most breathable, lightweight fabric that uses a Recycled Polyester blend to create its superior wicking ability. Women's Specific Regular Mountain Bike Fit is generous and comfortable.