Your training program isn't going to stop just because the thermometer exploded, so you'd better pull on the Hincapie Sportswear Mercury Jersey and go find some high alpine, low temperature rides. Hincapie designed the Mercury for the hottest days of summer, with ultra light and moisture wicking Aerator Plus mesh fabric to help your sweat evaporate efficiently so your core temperature doesn't max out before your heartrate does. Even the sleeves and collar, which are made from stretchy and form fitting VelociTek mesh, are designed to draw moisture away from your skin and increase airflow. The Mercury's next to skin fit also contributes to the jersey's cooling effect by increasing the rate at which moisture can move from your skin to the jersey's outer fabric to evaporate. For days when not even this jersey's enough, there's also a mesh pocket at the upper back that's built to carry an ice bag for a cooling boost. Hincapie engineered the Mercury with flatlock seams to prevent rubbing and chafing, included ProGrip arm and waistband panels to keep your jersey in place, and three rear pockets to hold the bottles, salt tabs, and gels that are so essential when you're putting the hammer down in brutally hot conditions.