Given the weather conditions we have put both the final bits together in this post! With thanks to Snow & Rock.

Mid Layer (Layer2)
This is the thermal layer of the system. This can be comprised of several layers or just one layer depending on the weather conditions.

Most fabrics that you find for this layer tend to be fleece type material. This traps the air within its fibres and the body heats this up thus keeping you warm, the down side to these fabrics is that they are not wind proof which is the main reason the body gets cold.

To understand this at 0ºC with a mild breeze of 15mph the weather the temperature with wind-chill can be -10 ºC, The wind is one of the most cooling effects that you will find.

There are fleeces that have a windproof membrane in them or a windproof/shower resistant shell technically known as a soft shell. These have become more popular over the last couple of years as the are a highly versatile jacket especially in snow sports extremely breathable they have a warmth quality to them and a weather resistant outer .

Outer Layer (Layer3)
This is the protection layer, it keeps the all the elements at bay. These garments are windproof, waterproof/snow proof. Majority of the jackets that are made today are breathable or has a breathable membrane this stops you getting wet from the inside out.

This should be a jacket and trouser combination of good quality breathable fabric such as eVENT or Gore tex, These are both windproof and waterproof and keeps all the elements at bay will keeping you warm and dry.