The Arcteryx RHO LTW Zip provides unbeatable dry next-to-skin wicking performance with the lightweight merino wool. The Merino wool helps to wick away excess moisture, keeping you comfortable in any conditions, is non-itchy, and the lycra blend helps to retain the body shape after lots of use. Great as part of a layering system, the RHO LTW also works well below a waterproof shell in milder conditions. Available in black 001.