The Sno Tek Parkstar 1/2 Zip Mid Layer Top helps to keep you comfortable in a variety of temperatures When youre cold the Parkstar will reduce lost body heat so you stay warmer When youre extremely active this top will allow excess heat to escape so you dont get sweaty The inside of the Parkstar Top is brushed so it feels soft wherever it touches the skin The exterior is sleek so that it slips easily under other layers 94pct polyester / 6pct spandex fabric1/2 zip collar for easy on/ offZippered chest pocket for holding essentialsBound cuffs fit closer to keep out cold airBrushed interior is soft and warmCenter back measures 31