The barely-there Pro Mesh 2.0 Base Layer is the second iteration of Castelli's Tour de France winning base layer, entirely made from super light, 3D mesh fabric for optimised moisture management in mild to warm conditions.Unlike many base layers, it has a comfortable flat hem at the waist which won't show under shorts, making it an unobtrusive part of your layering system.When you remove your jersey, though, its anonymity will cease, since it's printed with an all-over graphic in fun colours, made to impress.
