What is the best way to dress for and outdoor trip in cold weather?

The best way to dress for an outdoor trip in cold weather is to use the layering system. Instead of wearing one or two thick clothes, wear several thinner clothes instead. Then as you warm up and begin to sweat, you can take a layer or two off, so preventing overheating and chilling when you stop and cool down. When stopping for a rest or a meal, put the layers back on.