What is a base layer?

A base layer is the layer worn directly against your skin. Its main job is to manage moisture and help regulate your body temperature while you’re active.

Why do I need a base layer for hiking?

A good base layer helps move sweat away from your skin, keeping you more comfortable as your activity level and temperature change.

Should a base layer be tight or loose?

A base layer should sit relatively close to your body without restricting movement. This helps the fabric manage moisture effectively.

What should a base layer be made of?

Common choices include synthetic fabrics and merino wool. The right choice depends on your activity, conditions and personal preference.

Is merino wool better than synthetic?

Not necessarily. Merino is valued for its temperature regulation and odour resistance, while synthetic fabrics are often lightweight, quick-drying and durable.

Can I wear a base layer in summer?

Yes. A lightweight, breathable base layer can help manage sweat and keep you comfortable during warm-weather activities.

How many base layers should I bring hiking?

For a day hike, one base layer is usually enough. For multi-day trips, bringing a spare can be useful, particularly if you expect to sweat heavily or encounter wet conditions.

Should I wear a base layer when it’s cold?

Yes. A base layer provides the foundation of your layering system by managing moisture. Add a mid layer for warmth and an outer layer for weather protection as conditions require.

Can I wear cotton as a base layer?

Cotton absorbs moisture and dries slowly, making it less suitable for active hiking. Moisture-managing fabrics are generally a better choice when you expect to sweat.

How should a base layer fit?

It should sit comfortably against the skin while allowing unrestricted movement. Avoid a fit that is either excessively tight or loose.

What weight base layer should I choose?

Choose the weight based on temperature and activity level. Lightweight base layers work well for warm weather and high-output activities, while heavier options provide more warmth in colder conditions.

How do I choose the right base layer?

Consider activity level, temperature, fabric, fit and drying time. Your ideal base layer depends on how and where you plan to use it.

What should I wear over my base layer?

Add a mid layer for warmth and an outer layer for protection from wind and rain. The combination can be adjusted as conditions change.