4. The windbreaker : Certainly the most neglected layer, the windbreaker is more than essential. Of course, it is important to have a raincoat with you (see layer # 5) for times of rain, extreme wind and snow. For all other occasions where you need protection against light weather or wind, it's the windbreaker (or lightweight softshell) to wear. Much more breathable and flexible, the windbreaker is the most versatile shell. This is the diaper to use as a coat during most physical activities.
5. The raincoat : Since our hikes and trips sometimes lead us to more difficult conditions, we have to hang around a raincoat with you, in case of rain or snow (in extreme cold, the "3-ply" coat is the option to choose). The raincoat, although it is "waterproof-breathable" does not entirely release moisture from the body, which is why it is important not to wear it during intense physical activity.