Synthetic
Most outdoor and cycling clothing is synthetic, and for good reason. Synthetic fabrics are breathable and moisture wicking, so they pull the sweat away from your skin to help you stay dry. The fabric itself also dries quickly, so when you pull your jersey on in the morning it’s not still damp from that impromptu trailside swim the afternoon before. Synthetic fabric is also durable, holding up to activities like cycling where friction and abrasions are going to happen.
Wool
A fiber that’s gained a resurgence of popularity in cycling is merino wool. Merino wool comes from a specific breed of sheep. It is finer and softer than traditional wool, so it isn’t itchy against your skin. The merino fibers absorb moisture, but unlike cotton, they have a natural wicking effect, pulling sweat away from your skin and distributing it into the fabric to dry quickly. Merino wool doesn’t develop odor, something that can become a problem with synthetic clothing, especially on a multi-day bikepacking trip. Merino wool isn’t as tough as some other fabrics, but clothing manufacturers address this by weaving synthetic fibers in with the merino to create fabric that maintains merino’s benefits while increasing durability.
The Three Layer System
Modular layers are what allow a compact amount of clothing to cover a broad range of conditions. The layers can be worn separately or combined together to adjust for temperatures and weather as it changes throughout the trip. A simple way to think of this is known as the Three Layer System which is made up of a Base Layer, a Mid Layer, and an Outer Layer.
Base Layer
This is the layer closest to your skin. On a warm, sunny ride this might be your only layer: a pair of cycling shorts and a jersey. But when temperatures are cooler the base becomes more important because this is the layer that wicks sweat away from your skin keeping you dry and warm. The ability to wick sweat away from your skin and keep you dry is key. This is why most base layers are a snug fit; more skin contact means more moisture wicking.
Most outdoor and cycling clothing manufacturers make base layers out of both merino and synthetics, as well as long sleeve and short sleeve. A couple examples are the Rapha Women’s Merino Base Layer and the Gorewear Men’s Baselayer shirt. Both are thin enough to fit well under your jersey.
QUICK NOTE: None of these links are sponsored or affiliate links. We just found them to be good examples of each piece of clothing we are talking about.

















