Cycling jerseys are made from wicking materials that help regulate your temperature while providing important protection from the elements.
Wicking fabrics prevent you from staying moist by moving sweat away from your skin to the outside of the garment where it can be evaporated more easily. This means you stay drier for longer and don’t suffer a chill when the wind blows.
Consider your exertion levels on the bike, if you heat up quickly, look for a high performance wicking fabric with mesh panels for speed cooling down the sides and under the arms.
If you’re a multi day cyclist, woollen-based fabrics are often favourable over man-made synthetics because of their ability to stay pong free for longer. Apparently fat molecules in sweat find it harder to bind to organic fibres.
Manufacturers have also been able to create fabrics that incorporate sun protection, with SPF ratings and even specially-treated materials that have anti-microbial and cooling properties. All additional things worthy of consideration.