Designed to fit close to the body, the Alpaca Zip Up is crafted from an alpaca blend, features a ribbed collar and cuffs with a YKK 2-way zip. - Streamlined Fit - Black Alpaca Blend - Ribbed Collar & Cuffs CJ is 6'0 wearing a size medium and Lilli is 5'8 wearing a size small. Size up for a more relaxed fit.