Men's PAC Summit Aero Mesh LS Jersey Fall Collection it has been validated in

it has been validated in wind-tunnel testing and proven across race courses throughout the U

With its multi-density foam and exceptional air permeability

The result: a highly breathable

The stretchy aero fit and super packability are added features for this jacket that offers excellent protection against the wettest of conditions thanks to a DWR (durable water repellent)

Men's PAC Summit Aero Mesh LS Jersey Fall Collection it has been validated inThe Summit Aero Mesh Jersey is engineered for warm weather performance and long distance riding. Made entirely from lightweight stretch mesh with 37. 5 active cooling technology , it helps regulate body temperature by pulling humidity away from the skinkeeping you cooler, drier, and more efficient on every mile. (Independent University of Colorado research has shown 37. 5 can increase athletic output by up to 25%.) Mesh sleeves and a YKK Vislon semi