Dressing well is not about one jacket that does everything, but about how you combine several layers that work together. We take you through the principles behind layering – and how to choose the right clothing for Northern Norwegian weather.
Dressing well is not about one jacket that does everything, but about how you combine several layers that work together. Layering – or "layering" as it is also known – is the principle behind smart dressing whether you are hiking in the mountains, working outdoors or simply heading out into Northern Norwegian winter weather. In this guide we take you through everything you need to know about layering, which materials to choose, and how to adapt your clothing to different activities and temperatures.
In brief
- Three layers: a base layer that moves moisture away from the skin, a mid layer that retains warmth, and an outer layer that stops wind and rain.
- Wool or synthetic next to the skin, never cotton: cotton retains sweat and becomes cold against the skin.
- The mid layer insulates with air: fleece, wool, down or synthetic insulation. Down is the warmest per gram; synthetic handles moisture better.
- The shell on the outside protects against wind and precipitation. Use the venting to release moisture when you are active.
- Adjust as you go: remove a layer before you start sweating, and put a layer on before you get cold during a break.
What is layering?
Layering is a method of building up your clothing in three main layers, each with its own function. Together, the layers ensure that you stay dry, warm and comfortable regardless of weather and activity level. The advantage of layering is that you can easily regulate your temperature by removing or adding a layer as needed – something that is absolutely essential when you move from a warm interior to cold wind, or from a gentle walk to intense activity.
The three layers are:
- Base layer (transport layer) – moves moisture away from the skin
- Mid layer (insulation layer) – retains warmth
- Outer layer (shell) – protects against wind and rain
Let us look more closely at each layer.
Layer 1: Base layer – the transport layer
The base layer sits close to the skin and has one important task: to transport sweat and moisture away from the body. A dry skin is a warm skin, and this layer is therefore the foundation of your entire layering system.
What to look for:
- Materials such as wool (merino wool), polyester or a blend
- A close-fitting cut
- Quick-drying properties
Which materials work best?
Merino wool is a first choice for many. The wool retains warmth even when wet, resists odour and suits both everyday use and demanding hikes. Synthetic materials such as polyester are more affordable, dry even faster and withstand frequent washing – but they can start to smell after intense use.
What to avoid: Cotton is the worst choice for a base layer. Cotton absorbs sweat, retains moisture and becomes cold against the skin. Save your cotton garments for warm summer days or indoor use.
Tip: In very cold weather you can wear two base layers – a thin one next to the skin and a slightly thicker one on top. This gives extra insulation without making your clothing feel bulky.
See the range of wool base layers for women and wool base layers for men.
Layer 2: Mid layer – the insulation layer
The mid layer retains your body heat. It works by trapping air between the fibres, and it is this air that insulates against the cold. The more air the layer can hold, the warmer it will be.
Common types of mid layer:
Fleece is the classic choice. Fleece is lightweight, breathable and dries quickly. It comes in various thicknesses, from thin microfleece to thick 300-fleece for extreme cold. Fleece releases moisture from the base layer and is comfortable to wear.
Not sure which fleece to choose? The guide Fleece jacket: how to choose explains the four types of fleece and compares ten models. You can also go straight to fleece for women or fleece for men.
Wool jumpers provide good insulation, particularly in thicker knits. Wool retains warmth even when slightly damp, and is a good choice for calmer activities or sedentary work.
Down jackets are the warmest option relative to weight. Down packs small and insulates well – ideal for cold outings where you are not sweating heavily. The drawback is that down loses its insulating ability when it gets wet.
Synthetic insulation (PrimaLoft, Coreloft and similar) works like down, but retains warmth even when wet. This is a better choice in wet climates or for activities where you sweat a lot.
See the range of down jackets for women and down jackets for men, or all winter jackets for women and winter jackets for men.
When do you need more mid layers?
In very cold weather or at low activity levels, you can combine several mid layers – for example a thin fleece closest to the body and a down gilet or down jacket on top. This gives you the flexibility to regulate your warmth.
Layer 3: The outer layer – the shell
The shell is your defence against weather and wind. It must protect against rain, snow and wind, whilst allowing sweat and moisture from the inner layers to escape. This is often the most expensive part of your clothing system, but also the most important investment for being outdoors all year round in the climate of northern Norway.
Three main types of shell:
Hardshell (shell jacket) is fully waterproof and windproof, most often with a membrane such as Gore-Tex or equivalent. A hardshell withstands driving rain, sleet and strong wind, and is a must for trips in unsettled weather. The material is stiffer than softshell, but modern shell jackets are surprisingly comfortable.
Softshell is more flexible and breathable, but not quite as waterproof. Softshell is well suited to active use in dry or lightly wet conditions – for example ski tours, climbing or jogging in cool weather.
Wind jacket is the lightest option, intended for light wind and cold weather without rain. Many wind jackets pack down to the size of a fist and are handy to carry as an extra layer in your pack.
What to look for in a shell jacket:
- Sealed seams
- Adjustable hood that fits over a hat or helmet
- Ventilation zips under the arms
- Pockets positioned so they work with a harness or pack
We explain water column, breathability ratings and membranes in the guide How to choose the right shell jacket. See the range of shell jackets for women and shell jackets for men.
Layering in practice – examples and temperature table
The table is a starting point. Wind, moisture and how quickly you feel the cold determine how much you need – it is better to carry an extra layer in your pack than to be overdressed.
| Temperature | Active (hiking, skiing, running) | Stationary (break, fishing, standing watch) |
|---|---|---|
| +10 °C | Thin wool or synthetic + wind jacket | Thin wool + light fleece + shell if raining |
| 0 °C | Thin wool + thin fleece + softshell or shell | Wool + thick fleece or wool jumper + shell |
| −10 °C | Wool + thin fleece + shell, down jacket in pack | Thick wool + thick fleece + down jacket or insulated jacket |
| −20 °C | Thick wool + fleece + shell, down jacket for breaks | Thick wool + fleece + down + insulated outer layer, hat, mittens and neck gaiter |
Everyday life in Tromsø in winter (−10 °C, light wind): more on this in the guide What do you wear in Tromsø in winter?
- Base layer: Merino wool long johns and top
- Mid layer: Thick fleece or wool jumper
- Outer layer: Shell jacket or winter jacket with insulation
Day hike in the mountains in autumn (rain and 5 °C):
- Base layer: Thin merino wool or synthetic moisture-wicking layer
- Mid layer: Light fleece
- Outer layer: Hardshell jacket and rain trousers
- In addition: Extra fleece or down jacket in the pack for breaks
Ski tour in the mountains (cold and active):
- Base layer: Merino wool
- Mid layer: Thin fleece (preferably with ventilation)
- Outer layer: Softshell or light shell jacket
- In addition: Down jacket in the pack for breaks and summit stops
Stationary outdoor work (fishing, hunting, standing watch):
- Base layer: Thick merino wool
- Mid layer: Thick fleece + down gilet or down jacket
- Outer layer: Winter jacket or shell jacket with insulation
Common layering mistakes – and how to avoid them
Mistake 1: Too much, too soon Many people dress too warmly before they start the activity. You should feel slightly cold during the first few minutes – the body warms up quickly when moving. If you start out too warm, you end up sweating through the base layer, and then you get cold as soon as you stop.
Mistake 2: Cotton as a base layer Cotton T-shirts worn under outdoor clothing is a classic mistake. Cotton absorbs sweat and cools you down. Switch to merino wool or synthetic material.
Mistake 3: Shell jacket without ventilation Even the best breathable membrane cannot release all sweat during intense activity. Shell jackets with ventilation zips under the arms are worth their weight in gold.
Mistake 4: Forgetting the head and extremities The head, hands and feet get cold quickly because they are often the least well clothed. A hat, mittens and good socks are just as important as the jacket. In very cold weather it is also wise to wear a buff over the mouth and neck.
Mistake 5: Wrong size Layering only works if the layers fit over one another without being restrictive. The shell jacket must be roomy enough to accommodate fleece and down underneath – but not so large that it lets cold air in.
Materials explained – a brief summary
- Merino wool: Warm, low-odour and retains warmth even when wet. Expensive and requires careful washing. Best as a base layer and for everyday use.
- Polyester/synthetic: Dries quickly, affordable and durable. Can start to smell after use. Best as a base layer and mid layer.
- Fleece: Light, breathable and warm. Susceptible to wind. Best as a mid layer.
- Down: Exceptionally warm relative to its weight. Loses insulation when wet. Best as a mid layer and during breaks.
- Synthetic insulation: Retains warmth even when wet. Heavier than down. Best as a mid layer in wet climates.
- Gore-Tex and similar: Waterproof and breathable. Expensive. Best for shell jackets.
How to choose the right combination
Consider these three questions before investing in your layering system:
- What are you going to do? Active outdoor pursuits require more breathable materials than stationary activity.
- What weather will you encounter? Wet climates require a better shell; cold climates require more insulation.
- How long will you be outside? Longer trips require more options in the pack to adjust to changing conditions.
Caring for your clothing
Proper washing and maintenance significantly extends the life of your garments. Merino wool can be machine washed at 30 degrees with a mild detergent – avoid fabric softener. Shell jackets should be washed with a specialist detergent for technical garments and re-proofed regularly to maintain their water-repellent properties. Down jackets can be washed at home, but should be tumble-dried with tennis balls to fluff the down back up.
Summary
Layering is not about buying more clothes – it is about combining the right clothes. A well-chosen base system with a moisture-wicking layer, a mid-layer and a shell gives you the flexibility to handle everything from a mild autumn breeze to severe winter cold. Start by investing in a solid base layer and a good shell – these two layers are the backbone of your clothing system. The mid-layer can be built up over time with several options for different temperatures and activities.
Need help putting together a complete system? Pop into one of our shops in Tromsø and we will help you find the right garments for your needs and the North Norwegian weather.
Sources
- Forsvaret – Kaldværsskader og forebygging — several thin layers, wool next to skin and windproof on the outside
- Forsvaret – Forsvarets kuldetips — three layers, wool and avoid cotton
- Woolpower – The layering principle — why moisture against the skin causes cooling
- Arc'teryx – Layering Clothes Like a Pro — mid-layers, shells and ventilation
- Arc'teryx – Layering guide — down and synthetic as mid-layers
- Devold – Lag på lag-prinsippet — wool for regulating temperature and moisture
Last reviewed 19.10.2026.
