2nd layer: Intermediate
The mid-layer's role is to retain the warm air previously heated by the first layer. The better it can trap this air, the more it helps maintain a comfortable temperature around the body.
These are generally thicker knit garments, made of boiled, felted, or bulkier wool.
In very cold weather, it can be doubled by layering two garments from this category.
For your comfort, I have categorized the store's clothing according to the 3-layer method. This will help you better understand the role of each layer and more easily choose the right clothing for your use.
Discover my selection of clothing designed to enhance thermal insulation while retaining the benefits of natural fibers.