Nevertheless, layers are a good thing because they trap air in between them, which acts as an insulator for heat. And they can be put on and taken off depending on the varying situations - Alok Jha, How to Dress for AntarcticaI am not dressing for polar regions. I am a Holiday Inn kind of girl. I do not camp out. A dog showed up at my house one day, fully grown, and now she is my Baby. I like to go outside and walk the dog in the snow. And I consider the weekday one mile walk to the post office part of my plan to stay healthy and active.
Layering your clothing is a tried-and-true way to maximize your comfort in the outdoors. The beauty of this simple concept is that it allows you to make quick adjustments based on your activity level and changes in the weather.
Each layer has a function. The base layer (against your skin) manages moisture; the insulating layer protects you from the cold; the shell layer(outer layer) shields you from wind and rain. You simply add or subtract layers as needed.
For a deeper understanding, read on.