The castelli womens core mesh sleeveless base layer is made from a fully open mesh to make a layer of air between your skin and the jersey its body wrap design will wick away moisture from your skin to keep you comfortable the vest also features minimal seams for comfort sublimated logo and a long cut so it stays tucked in shorts ad key features fully open mesh creates a layer of air between your skin and the jersey body wrap design wicks away moisture minimal seams for maximum c