IBEX 2.0 is an extremely light and comfortable helmet designed for optimal ventilation. Its unique shape ensures good aerodynamics and excellent ventilation. Developed in the HJC wind tunnel laboratory, the IBEX helmet uses the Venturi Dynamics system, which ensures a good smoothness of the helmet. Thanks to its impressive and well-balanced design, the helmet is perfect for intense training and hot weather conditions. SPECIFICATIONS: SIZE FIT 51-56 cm M 55-59 cm P 58-61 cm Weighing around 200 g and having 16 ventilation holes, the perfectly ventilated helmet will also surprise you with its aerodynamics. It is also equipped with classic features such as: adjustable head cradle, goggle holder, strap dividers and antibacterial X-Static pads. TECHNICAL FEATURES: SELFIT™ SELFIT is an automatic self-adjusting attachment system that is a revolutionary technology for attaching a bicycle helmet. When the helmet is snug on the head, no further adjustment is required, even when the head moves while driving. The SELFIT system automatically adjusts the gap and ensures an even fit and comfort for your head. 5 STEP SNAP FIT5 attachment positions ensure a consistent fit and comfort for all head shapes and sizes. The rider can precisely adjust the fit, so the helmet will be perfectly fit for the perfect ride time after time.