Choosing the Right Baselayer Fabric

If you spend a lot of time outdoors in cold climates then a baselayer will be one of the most important pieces of kit in your wardrobe.baselayer They sit next to the skin and help to wick moisture away from the body, preventing uncomfortable sweat build up and keeping your temperature well regulated.

There are a wide variety of fabric options for baselayers, from synthetic fibres like polyester and nylon to natural fibres like merino wool and silk.baselayer Different fabrics have different wicking, drying and odor retention properties. However, choosing the right fabric for your activity and environment is essential.

Synthetic fibres are hardwearing and a great choice for high energy activities, because they can be designed to wick sweat quickly and efficiently. They’re also quick to dry and don’t absorb moisture, so they feel less heavy and clammy on the skin than wool after heavy perspiration. However, they tend to be a little warmer than natural fibres and they can start to smell a bit after heavy perspiration.

Natural fibres are a good option for base layers because they’re soft on the skin, breathe well and offer good insulation. Merino wool, in particular, is super soft and a good choice for baselayers as it’s naturally anti-bacterial so it doesn’t retain body odours. It’s also quick to dry and it offers the best combination of warmth, wicking and breathability of any natural fibre, making it an ideal option for winter activities.

Other natural fibres that are often used for baselayers include cotton, which is very breathable and doesn’t irritate the skin. Another natural fibre, silk, is very lightweight and comfortable against the skin, and it’s naturally moisture-wicking and insulating. However, it doesn’t wick as fast as synthetics and it can be slower to dry, so it’s not always suitable for active wear.

There’s also a number of blends that are available, which combine the benefits of both synthetic and natural materials. These can be effective for a mix of climates and activities, depending on the ratio of each material in the blend. Some of these blends are made from entirely synthetic materials, while others contain a mix of synthetic and natural fibres in different percentages.

The fabric weight of your baselayer is an important factor to consider as well. There are baselayers available in a range of weights, from ultralight to expedition weight. Lighter fabrics are better for summer, while heavier fabrics are more suited to winter outdoor activities.

When choosing a fabric for your base layer, make sure that it’s close-fitting to ensure that it can wick moisture efficiently. It’s also important that it fits comfortably against your skin without being too tight, because loose baselayers can allow cold air to circulate near your body, which defeats the purpose of the layer. In general, a close fit is a good option for active baselayers. However, if you’re wearing an inactive baselayer around camp or while hiking then the fit isn’t so critical.