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How Tight Should Base Layers Be?

How tight should base layers be? - Sub Zero Factor 1 Plus base layer zip turtle top being worn correctly by a skier

 

The two most common questions we get asked are how tight should base layers be? and what is the difference between base layers and compression layers? We will deal with the latter question in the next few weeks , but this post will hopefully enlighten you on the correct way to wear base layers.

ARE BASE LAYERS SUPPOSED TO BE TIGHT?

The simple answer is it depends on your definition of tight. To me, tight means restrictive and uncomfortable, which is obviously a hindrance and a distraction when performing an outdoor activity. It has entered the vocabulary of performance clothing as the dividing line between base layers and compression layers has become blurred by marketeers. We try and avoid using ‘tight’ altogether when talking to our customers, preferring a more softer wording such as ‘snug’.

WHY NOT WEAR BAGGY BASE LAYERS?

This is the other extreme. You may think you look cool with your bum hanging out your base layer leggings (obviously a matter of opinion) but they won’t keep you warm. Badly fitting thermals will lead to all sorts of problems such as heat loss, vastly reduced wicking rates (transportation of moisture), and possible skin sores from rubbing of excess material.

HOW SHOULD BASE LAYERS FIT?

Base layers need to be close fitting to prevent warm air trapped between your clothing from being wafted out during movement. A close fitting base layer will also be much more efficient at moisture management due to a higher fabric surface area being in close contact with your skin.

When trying on a base layer you need to understand that the fabric has been designed to be stretchy so it will naturally adjust to most body shapes. What you should be looking for is the correct length in the arms (finishing just over the wrist) and the length of the body resting on the top of your bottom.

A good way to check  if the base layer is too tight is to see if you can pinch any of the fabric and pull it away from your body. If this is difficult to do then you more than likely have a size too small. Another area to check is under the armpits. If you cannot get the full rolling movement of your arms and shoulders then you need to try the next size up.

SO HOW TIGHT SHOULD BASE LAYERS BE?

In answer to the original question, base layers should be snug fitting but not restrictive. Warm air needs to be trapped between fabric layers without the possibility of it being wafted out if you are to stay warm – the air is the insulator. At the same time, you don’t want the base layer to be so skin tight that it restricts movement or even blood flow.

So my final piece of advice is if it feels too tight then it probably is.

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This entry was posted on Monday, September 25th, 2017 at 3:26 pm and is filed under Advice, Base Layers. You can follow any responses to this entry through the RSS 2.0 feed.

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