RMI and Whittaker Mountaineering Gear Guides Rainier Four Day Summit Climb - Page 16

Upper Body Layering We recommend a minimum of 5 upper body layers, all of which can be used in conjunction with each other. Two of these should be insulating layers, one light and one medium, that fit well together. Today there are many different layering systems to choose from, including fleece, soft-shell, down and synthetic options. The following pages discuss each layer in more detail.\r\n\r\nThe Logic behind Upper Body Layering The images below demonstrate the upper body layering system - how each piece works together as part of a larger system and the different choices of material. \r\n