Elevate your winter and multisport performance with the X-BIONIC® ENERGIZER 4.0 Transmission Layer Full Zip WMN. This women's midlayer jacket uses patented ThermoSyphon® and 3D Bionic Sphere® technologies for optimal sweat management and temperature regulation. The Chamber System Protector insulates moving joints, while Sweat Traps® boost rapid evaporation. Stay cool, dry, and agile throughout all your all-year activities.