The Drone Wide Body II is the second generation of the helmet that has won multiple World Tour Time Trials and Ironman World Championships. A new tail design developed in our in-house wind tunnel helps the new Drone II be 13.5 seconds faster over 40 km time trial than the previous version. The MET Drone’s unique wide body design channels airflow over the shoulders significantly reducing turbulence and drag. This results in valuable energy savings and an aerodynamic advantage for the rider. The Drone Wide Body II has been meticulously designed and engineered in the TUBE an advanced wind tunnel built at MET’s headquarters in Talamona. Specifically engineered for cycling aerodynamics and thermal analysis MET’s proprietary wind tunnel is a state-of-the-art facility for testing helmets bikes rider positions and other aero equipment. Product Specification: In-mould polycarbonate shell with EPS liner Wide Body Design: larger outer shell for both sizes to maximize aerodynamics Linear Tail Design: allows for a lower head position while riding MET Safe-T Advanced Fit System 360° head belt with vertical and occipital adjustments for a customised fit Air Lite straps with adjustable dividers for enhanced aerodynamics and comfort Low Drag inlets strategically positioned to reduce air turbulence 4 vents with an internal air channelling system to improve ventilation and comfort Supplied with MET Mag-Clip Shield | Clear Hand-washable comfort pads Helmet soft bag included Certification CE SIZES and WEIGHTS Size: M: 55-58 L: 59-62 cm  Weight: M: 430 L: 430 g