Fit & Design: Realfleece(TM) brushed merino wool provides warmth and softness next-to-skin Cool-Lite(TM) breathable and lightweight fabric blend is designed to help keep you cool Offset shoulder seams prevent friction Underarm panel in eyelet mesh for ventilation Thumb loops keep your sleeves in place and hands warm Offset side seams Hidden chest pocket Dipped hem for extra coverage Additional Details: Machine wash cold