An effective layering system is the key to staying warm and comfortable on the slopes. Everyone feels the cold differently and will opt to add or remove layers and accessories based on this and the weather conditions. A basic layering system however, can keep everyone happy.
A base layer is your first line of defence against the cold. Base layers are designed to regulate your body temperature and should be close fitting to trap a thin layer of warm air against your skin. Base layers come in many forms, most notably as tops and leggings, and in different fabrics. Merino wool thermals are popular due to their insulating properties and breathability.
An effective mid layer will provide great insulation by working hand in hand with your base layer to trap air between layers, resulting in enhanced warmth and comfort. Warmth without weight is important, especially during active use, and fleece is ideal for keeping you warm without restricting your movement.
The outer layer is your main defence against the elements and will provide protection against the snow and wind. A ski jacket is an important outer layer as it will help to retain the heat that your other two layers provide. It should also provide some protection against moisture from snow.
Ski pants or Salopettes are also important. They will help keep your legs warm and dry should you fall in the snow.
A good pair of ski gloves will help to stop heat loss through your hands.