The Wallaroo 210 Zip offers soft and comfortable Merino wool performance wash after wash. The super soft Wallaroo fabric is especially well adapted for high exertion activity in a wide range of temperatures and conditions, and has an incredibly soft next-to-skin feel. The zipper on the Wallaroo 210 Zip adds more versatility and ventilation to the amazing thermal regulation of this long sleeved, semi-fitted T.