The rule of thumb is to use several thin layers rather than just one or two thick layers. This allows you to peel layers off or put them on depending on the weather and the time of day. For your base-layer choose a fabric that soaks moisture away from your skin and dries quickly. Your outer layer should be fully wind and rainproof. We recommend you carry good quality thermals, woolen socks & a waterproof jacket. A windproof outer layer is essential to combat wind-chill(essential for altitudes like Auden’s and Mayali). Choose a thermal base-layer and fabrics that wick sweat away from your skin to avoid getting wet and cold. You need to protect your hands and feet with high-quality thermal gloves and socks, also a hat to protect your head and a balaclava to protect your face.