The Obermeyer UltraGear Micro Zip-T is perfect as an extra warm base layer or as a sweatshirt to throw on on a chilly morning. Its high-tech fabric manages moisture, so he stays comfortable, even when things heat up.Pofile: Base Fabric: UltraGearBase Insulation: Base Lining: 1/4 zipFlat seaming for maximum comfortInterior windguardMock neck