Long cool rides are warm and comfortable with the Free Windstopper Vest. This vest is made for full insulation with high breathability to keep your core warm when used with a long-sleeve base layer and long-sleeve jersey. The vest doesn't really fit in a back pocket, but this system is ideal for higher-intensity training when you want to avoid overheating and let the sweat evaporate quickly. It's highly practical with the three easily accessible rear pockets and YKK Camlock zipper for easy opening and closing.