The Fox Baseframe Pro Short-Sleeve is a mountain biking baselayer that protects vulnerable areas while it uses your body heat and perforated grooves to conform to the contours of your chest and back, so it feels even better as you ride. Elite D3O® impact technology shields your chest, back, and shoulders, while breathable mesh fabric keeps you cool during intense rides. Stay dry and agile as the stretchy, moisture-wicking material moves naturally with your body, letting you focus on the thrill of the trail with confidence.