Merino wool or synthetics for training? That is one of the most common questions we receive. The answer depends on what you are training for, the weather conditions, and what you prioritize. Here, we go through the differences so you can choose the right socks for your training.
Merino wool or synthetics – what's the difference?
When you exercise, your feet are exposed to heat, moisture, and friction. Therefore, the material of your socks plays a big role in comfort.
Synthetic materials are often light, thin, and quick-drying. Merino wool works differently by combining moisture-wicking with natural temperature regulation. This means merino wool can help your feet maintain a more consistent temperature, especially during longer sessions or fluctuating weather.
It's not about one material always being best, but rather which material is best suited for your activity.
Is merino wool good for training?
Yes. Merino wool works well for training because the material helps to wick away moisture while also contributing to a consistent temperature around the foot.
Many choose merino wool socks for running, hiking, skiing, and other endurance training where comfort needs to last for a long time. Unlike traditional wool, merino wool has finer and softer fibers, making the material comfortable directly against the skin.
When is merino wool best suited?
Merino wool is especially suitable when the weather varies, when temperatures are low, or when training sessions are longer. The material continues to insulate even when it becomes damp from sweat or moisture.
Therefore, wool socks are a popular choice for winter running, hiking, skiing, and longer outdoor training sessions.
Is merino wool good for sweaty feet?
Yes. Merino wool helps to wick moisture away from the skin and contributes to a consistent temperature around the foot. This means many experience drier and more comfortable feet during activity.
Merino wool also has natural properties that prevent odor from developing as easily as in many synthetic materials. Therefore, wool socks often feel fresher during longer sessions and multi-day activities.
When are synthetics best suited?
Synthetics can be a good choice for intense training in warm weather where low weight and quick drying time are prioritized. Many use thin synthetic socks during shorter, high-intensity sessions or when they want a very cool feeling in their shoe.
For many active individuals, it's not an either-or situation. Both merino wool and synthetics can have their place depending on the season, weather, and activity.

Wool socks for running, hiking, and skiing
For running, many prefer a thinner wool sock that fits snugly and works well in running shoes. For hiking, durability, moisture transport, and chafing protection become extra important as feet are stressed for many hours. For skiing, warmth and comfort in the boot are crucial, without the sock feeling too thick.
Explore our wool running socks, hiking socks, and ski socks to find the right model for your activity.
Our recommended wool socks for training
For running, we recommend Technical Cushion High Wool, a functional merino wool running sock for those who want warmth, comfort, and efficient moisture transport during their run.
For hiking, Trekking is a popular choice that combines merino wool with 37.5® Technology for drier and more comfortable feet during long days on the trail.
If you want both warmth and support, we recommend Compression Wool, which combines merino wool with graduated compression for training, recovery, and everyday use.
Merino wool or synthetics – which should you choose?
Choose merino wool when you want temperature regulation, soft comfort, and a material that works well in cold or fluctuating weather. Choose synthetics when you prioritize low weight, a thin feel, and quick drying time during intense training.
The most important thing is to choose socks that help keep your feet dry, comfortable, and free from chafing, so you can focus on your training.
Regardless of which material you choose, the right sock is the one that suits your body, your activity, and your season.