Castelli womens core mesh sleeveless base layerthe castelli womens core mesh sleeveless base layer is the perfect piece to wear under your jersey in the summer fully open mesh creates a layer of air between your skin and the jersey for breathability while the body wrap design wicks away moisture featuresfully open mesh creates a layer of air between your skin and the jerseybody wrap design wicks away moisture minimal seams for maximum comfort sublimated logocut long to stay tucked in shortsw