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Mid Layer Guide
The most versatile layer, explained.
A great mid layer keeps you warm, breathes as you move and adapts to every effort, from slow climbs to high-output activities.
Our Most Loved Mid Layers
A mid layer is a cornerstone of your layering system, and its most versatile piece. Traditionally worn over a base layer and under a shell, it provides insulation while staying breathable, helping you retain warmth without overheating or restricting movement.
But its role goes beyond layering. On milder days or high-output sessions, a mid layer works just as well on its own, delivering on both lightweight warmth and all-day comfort.
Add it when temperatures drop, open it up or remove it when the effort rises. Designed to adapt as you move, it helps keep you comfortable from your first steps all the way to the summit.
In a three-layer system, each piece has a job:
The base layer manages moisture
The mid layer traps warmth
The outer layer protects from wind and weather
Together, they keep your body temperature steady so you can focus on the adventure ahead.
Pro Tip
Choose a mid layer that layers easily and stands strong on its own. The more adaptable it is, the more often you’ll reach for it.
And skip the cotton hoodie. Cotton absorbs moisture, dries slowly and loses insulation when wet. In cold conditions, that means less warmth and less comfort. Performance fabrics are designed to keep working, even when you’re pushing hard.
Fleece
Breathable Warmth
Fleece mid layers are built for movement.
The textured fabric locks in warmth while heat and moisture escape, making it a natural choice for high-output days. Whether running, hiking intensely or ski touring: when you’re working hard and generating heat, fleece helps keep your temperature in check. Lightweight, breathable and easy to wear, it’s the layer you reach for when performance and breathability matter most.
Cubic
Lightweight Movement
Cubic mid layers are designed for breathable comfort and versatile wear.
The unique waffled structure reduces contact with the skin, allowing heat and moisture to escape easily during movement. Ideal for mild conditions or steady-paced activities, it helps regulate your temperature without adding bulk. Lightweight, breathable and easy to wear, it’s the layer you reach for when comfort and versatility matter most.
Mid Layers Done Right
Avoid cotton mid layers
Cotton absorbs moisture and dries slowly, which means it loses its insulating ability when wet. During outdoor activities this can leave you feeling damp and cold. Performance fabrics are designed to wick moisture and keep working as your intensity changes.
Match warmth to your activity
Too much insulation during high-output activities can lead to overheating and excessive sweating. Instead, choose a breathable fleece or lightweight mid layer that allows excess heat to escape while still providing warmth.
Avoid unnecessary bulk
A mid layer should fit comfortably under your shell without restricting movement. Bulky pieces can reduce mobility and make layering uncomfortable. Look for lightweight insulation or technical fleece designed to layer easily.
Pair it with a base layer for best performance
Mid layers can be worn on their own in mild conditions. But during active use, pairing them with a base layer helps manage moisture and keeps your body temperature balanced for longer.
Frequently Asked Questions
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