The lightest and coolest jersey in the Rapha line-up, made for racing and training in hot and humid conditions. Heat and humidity are testing conditions for racing jerseys and bib shorts - sweat soaks fabrics, ill-placed seams can cause irritation, and exposed skin risks sun damage - so Rapha's designers have reworked the Pro Team Flyweight Jersey with two new fabrics and a new construction to create a jersey that thrives in the height of summer.The front of the jersey features a new lightweight fabric with superb ventilation, allowing air to pass over the body. The back of the jersey is made of an alternate lightweight fabric which provides UPF 40 sun protection. Thanks to their excellent breathability, both fabrics dry very quickly - meaning they aren't weighed down with sweat after a few hard efforts in the heat. A lightweight jersey designed for training and racing in hot and humid conditions Made from an ultralight, high-stretch fabric for unparalleled airflow and moisture absorption Disperses heat and moisture to keep you dry and cool throughout your hardest efforts Back panel treated to provide UPF40 sun protection Bonded shoulder and collar construction saves weight Extra-long sleeves offer added protection from the sun