The blend of polyester microfiber and spandex provides the ultimate protection from cold wind, yet lightweight enough to prevent overheating.
The key to staying warm starts with good quality top and bottom base layers to keep your core temperature up. Base layers are designed to be close to the skin to trap the body’s natural heat, while wicking perspiration from the body. The best performing base layers are made from synthetic fabric such as polyester, which possess the previously noted qualities. To ensure optimal performance, do not have other fabrics, such as a cotton undershirt or underwear, between the body and the base layer. Base layers need to be in direct contact with skin for it to work effectively.
Now that you have the proper base layer, it is important to incorporate an effective mid layer that balances a lightweight design but offers warmth. The perfect mid layer does not restrict movement and is breathable to prevent overheating but can block out a cold north wind. This layer should be made of high performance cotton or a cotton/polyester blend. Layering lightweight performance layers is not only warmer but allows for maximum mobility over bulky winter clothing.
Your final layer is important because you need protection from the elements while retaining breathable, moisture wicking properties as other layers provided. The mid and outer layers can be removed or added depending on the conditions you face. Choosing an outer layer largely depends on activity level and temperature.