How to choose your base layer ?
Base layers play a key role in your enjoyment and comfort during a beautiful day outdoors. Here’s how to choose them.
1. Understand the base layer’s role
What’s the purpose of a base layer? It’s your foundation. Its main job is to keep you dry by wicking away moisture. That’s why it’s important to choose the type of base layer according to your sport. Although their mission is the same, synthetic fibres and merino wool—the materials most base layers are made from—have different characteristics.
2. Choose the right textile material
Base layers are made from natural fibres, such as merino wool, or synthetics, for example polyester. Each material has specific technical characteristics that make it a good candidate for a particular outdoor activity. In addition, both types of materials can be combined in a base layer to offer each one’s advantages.
Merino Wool Base Layer
Merino wool has several desirable qualities. As a natural material, it will appeal to those who prefer buying eco-friendly clothing. In addition, it regulates body temperature, meaning it keeps you warm or cool depending on the conditions. There are various densities of merino wool, which are represented by a number indicating the grams of wool per square metre. The higher the number, the warmer and better adapted it is for frigid temperatures or low-intensity activities.
Advantages of Merino Wool
- Temperature regulation
- Naturally soft to the touch
- Anti-odour
- Retains its thermal properties even when wet
- Durability
- Natural fibre
Disadvantages of Merino Wool
- More expensive
Synthetic Base Layer
Synthetics, such as nylon, polyester and elastane, to name a few, have outstanding moisture-wicking properties. They dry out very quickly, which makes them comfortable during high-intensity activities. However, they don’t insulate well. That said, they’re excellent options for ski touring.
Advantages of Synthetic Fabrics
- Quick drying
- Fast moisture wicking
- Very light
Disadvantages of Synthetic Fabrics
- Absorb odours
- Provide little insulation
Blended Base Layers
The two types of materials can be combined to provide each one’s technical properties. Helly Hansen Lifa Merino base layers are outstanding examples of this design, with synthetics worn directly on the skin and merino wool as an outer layer. They keep you dry while regulating body temperature and reducing odours.
3. Choose a base layer for your activity
The base layer you choose depends on your sport’s intensity level. If you do several activities and don’t want to buy more than one, you should think about your most frequent sport.
For higher-intensity, more cardiovascular sports, synthetic fibre is an excellent choice. This type of base layer is perfect for alpine touring, running and cross-country skiing.
As far as merino wool goes, its ability to retain maximum heat makes it ideal for anyone who gets cold quickly or for lower-intensity activities. Merino wool base layers are a great choice for downhill skiing, walking or snowshoeing.
Blended base layers work well for all types of activities. Go with a lower merino wool density for more intense sports and vice versa. Remember that everyone is different—some sweat more profusely than others, get cold faster, and so on. You’ll eventually find the winning combinations for your summer and winter sports.
Need advice for your alpine ski clothing? Find out what to wear for alpine skiing.
4. Assess the outdoor temperature
Even if you’re heading out on a touring or cross-country ski trip, don’t underestimate the temperature outside. Sometimes, even if the sport is very active, the weather can be just as frigid. In that case, select a merino wool base layer or choose mid layers with good insulating properties.
Are you interested in dressing in layers? Check out How to Dress for Ski Touring.
5. Wear a base layer properly
For the base layer to truly be your foundation, it should be close-fitting. It won’t be as effective if it’s too roomy. In addition, for the lower body base layer, a 3/4 fit combined with longer socks is ideal for winter sports. Your pants shouldn’t be in your boot to avoid creating unnecessary pressure points on your calves and cutting off your circulation.
6. Maintain your base layers
Base layers’ lifespans depend on the maintenance you do. The secret to keeping them as long as possible? Machine wash them in a delicate cycle with cool water. Use a mild, unscented or specialized soap for technical base layers, such as Grangers cleaning products. You should also definitely avoid putting them in the dryer. The fibres could shrink and lose their technical properties and therefore their effectiveness.
In short, although there are many types on the market, the best approach is to try more than one to find the base layer that works for you. Think about your needs according to the sport or sports and their intensity levels. Choosing a good base layer is the foundation of your comfort.
Are you unsure about choosing a base layer for kids? Check out our article Choosing Kids’ Winter Clothing.
