Castelli Size Chart Pro cyclists know the importance of the right base layer for the conditions. The Pro Mesh is made for the widest range of conditions and is designed to keep you dry in cool to mild temperatures. A custom graphic print lets you show off that you have something special when you open your jersey zip. Features: - 3D mesh fabric for excellent moisture management - Sublimated print graphic - Waist hem stays flat under shorts - Temperature range: 15deg-28degC / 59deg-80degF - Weight: 42g