Lightweight protection perfect fit the excellent water repellency and the waterproof zipper keep you dry plus the outstanding breathability of sportful39s lightest windstopper174 fabric prevents overheating no more feelings of clamminess as the pace hots up in addition to the light weight you will also immediately notice the stretch fit guaranteeing you extremely high levels of comfort this close fit also saves you energy no excess fabric to catch the wind and slow you down it39