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Active Layers for Hiking, Climbing, Running and More
Active layers are designed for when you’re moving, stopping and starting again. An active layering system should manage heat, move moisture away from your skin and stay comfortable across shifting weather and activity levels. Often, a complete layering system consists of a baselayer, a midlayer and a shell. Combined, these layers help keep you warm, dry and comfortable through both higher- and lower-output pursuits.
The foundation of a layering system, a baselayer sits next to your skin. Moisture-wicking tops pull sweat away so it can dry quickly, helping regulate temperature during high-output activities. In general, lightweight baselayers work well in mild conditions, while thermal layers add warmth when temperatures drop.
Fleece jackets add warmth without trapping excess heat. These breathable layers create a small buffer of warmth while allowing air to move, which makes them useful during steady movement or as part of a layering system in colder weather. Fleece works well on its own, and some fleece tops are suited for wearing under a shell when wind or light precipitation rolls in.
You can see a wide range of weights and styles in our fleece collection, from lightweight pullovers to more insulating zip-up layers.
Wind Shells and Light Protection
A wind shell blocks airflow to keep you warmer when you’re moving fast or out in blustery conditions, and most also shed light moisture while staying breathable enough for active use. These layers are designed to pack small and deploy quickly when needed.
For weather protection when it’s damp or drizzling, see our water-resistant active layers.
Insulated Active Layers for Starting and Stopping in Cold Weather
When activity levels vary, insulated active layers help you regulate your temperature so you don’t overheat. They’re built to breathe during movement and hold warmth while at rest, making them useful for start-and-stop activities in cooler weather.
Find a range of options in our insulated active layers, designed to work with baselayers and shells.
What are active layers used for?
Active layers are designed to regulate temperature and manage moisture while you’re hiking, running, climbing, fishing, mountain biking or pretty much anything else that keeps you on the move in the open air.
How do lightweight baselayers differ from thermal weight layers?
A baselayer focuses on moisture management and comfort next to the skin. A thermal layer adds insulation to trap heat and is typically worn over a baselayer in colder weather.
Are fleece jackets breathable enough for active use?
Yes, technical fleece jackets are designed to allow airflow while providing warmth and freedom of motion. This balance makes technical fleece a good choice for steady movement or as a midlayer under a shell.
When should I wear a wind shell?
Wear a wind shell when wind (or airflow while running or biking) starts to sap warmth during movement.
How should breathable layers fit?
Breathable layers should fit close enough to move moisture efficiently without restricting movement. A good fit also helps layers work together without excess bulk.
