Active trips require preparation and this includes making sure you have the right clothing and equipment for the adventure. This is especially important if the trip is planned during a cold season. In order not to get hypothermia, there is the principle of layering, which provides the greatest protection and comfort. But how do you choose the right layers of clothing for a winter hike? What are they made of? How do they differ from each other? The purpose of multiple layers of equipment is to protect you from the weather wherever you are. It is also worth remembering that each layer has its own function.