Castelli Pro Mesh 2.0 Sleeveless Base Layer

Castelli Pro Mesh 2.0 Sleeveless Base Layer Despite its lightweight, hardly there feel, Castelli's Pro Mesh 2.0 Sleeveless Base Layer does a fantastic job of wicking moisture when working hard on mild to warm days. This is thanks to the 3D mesh construction that effectively disperses sweat. A flat waist hem and close fit mean the garment won't show under shorts and sits neatly under a tight jersey.