The right base layer for the right conditions can make a world of difference. This is something Castelli’s pro riders understand, and the Pro Mesh Sleeveless Base Layer has been in their kit bag at some of the world’s biggest races including the Tour de France.Designed for cool to mild conditions, the base layer uses a 3D mesh fabric to help whip moisture away and keep you dry and comfortable. The waist hem sits flat under shorts eliminating any bunching. The sublimated graphics give a pop of style when your jersey’s unzipped and match up with the Castelli Maison Jersey too.Key Features3D mesh fabric for excellent moisture management,Sublimated print graphic that matches the Maison Jersey,Waist hem stays flat under shorts,15° – 28°C / 59° – 82°F,Weight: 48g (Large).