When layering counts most, Próis has the answer with the XTREME insulated vest.The XTREME vest maximizes core thermoregulation. Constructed of waterproof/breathable shell that is soft and silent. Insulated with 150gm 3M Ultra Thinsulate. Lined with our signature nylon tricot layering system to enhance ease of movement and layering. The XTREME vest keeps heat where it should be… in the body’s core. Complete with hood with external drawstring to cinch hood tightly to head while still maintaining peripheral vision. Includes Próis signature ducktail feature that unsnaps at base of vest to provide the user a dry place to sit. The XTREME Vest is designed to wear as an added insulator layering piece under our XTREME jacket or may be worn over baselayers as the day heats up!