Cleverly disguisedthe promessa jersey cleverly disguises extreme performance with design details that make people think you bought the jersey for the looks not the tech the engineered knit fabric allows us to make the front extra stretchy while the back has limited stretch so that the pockets dont sag when you load them up we knit in extra ventilation and subtle design details to balance technical features and sophisticated design key features engineered knit in polyesterlycra for excel