Conquer the peaks of ambitious performance sports with the X-BIONIC® Energy Accumulator 4.0 Shirt Round Neck Long Sleeve for men. The new 4.0 generation is the first to offer Retina® Ultra-High-Definition quality for unique functional accuracy.
The legendary patented 3D Bionic Sphere® System with ThermoSyphon® technology is more powerful than ever, working on the chest and back: complex 3D structures and Y-shaped elements maximize air exchange, cooling when you sweat and warming when you are cold.
The Air-Conditioning Channel® and the AirComPlex zone in the upper abdomen, as well as ISO shoulder and Sweat Traps® under the arm, are part of the performance-enhancing thermoregulating technologies. Expansion Ribs® at the elbows ensure optimal climate comfort while providing full freedom of movement.