Moncler specialises in down-filled outerwear, providing unbeatable performance for cooler days. The brand's singlets make a particularly astute investment, as they can be layered up or down to provide quick protection. In warmer weather, just throw one over a jumper as the evening cools to keep your temperature up, or when it's cold out, a vest will work well as an extra layer to protect your core. As these pieces are so lightweight and easy to pack, they're great for dealing with unexpected conditions.