Worn alone or as a midlayer, the Brooks Vapor-Dry2 half-zip running top escorts excess sweat to the surface for evaporation, so you stay dry and comfortable. Denier gradient polyester quickly moves moisture away from skin to provide dry comfort. Semi-fitted with built-in reflectivity, HVAC-lined collar and dual rear holster pockets. Vapor-Dry2™ 93% denier gradient polyester/7% spandex. Imported.