Merino Wool Base Layers

A good base layer should be made of a fabric that wicks moisture away from your skin when you sweat. Synthetic fabrics like polyester, nylon, and polypropylene are the most commonly used materials for this purpose. Avoid cotton, as it tends to absorb moisture, which can leave your clothes feeling wet and cold.

If you're looking to avoid synthetic fabrics for sustainability reasons, merino wool is an excellent alternative for less intense activities. It's a soft type of wool that doesn't itch or irritate the skin. It warms nicely, so you won't freeze on the playground or at the ice rink.

Many base layers contain a blend of synthetic and wool, giving you the best of both fabrics: warmth and moisture-wicking properties.

If you're interested in buying a sustainably produced base layer, consider purchasing from one of these brands.