Aerodynamics on a new level: Because every watt counts, we have further developed the GameChanger TT time trial helmet. Ideal for triathletes, time trialists and track cyclists. The lightweight GameChanger TT 1.1 brings optimised aerodynamics to the track so that you don't lose a second. This is ensured by the flexible and soft EVA tail at the rear of the helmet. It prevents air turbulence between the neck and helmet from slowing you down. Thanks to the streamlined multi-position design, you can even tilt your head during the race without having to take any noticeable losses in aerodynamics. And you can click the Fidlock magnetic fastener under your chin in an instant so that it takes no time to put on your helmet. You can also easily attach or remove the visor with holding magnets. Three visor variants are available: Clear with clear glass, Smoke with tinted glass or Chrome as a mirrored variant. For optimum ventilation, the bike helmet has a large air inlet so that you can keep a cool head on the hottest rides. The GameChanger TT 1.1 time trial helmet comes in a custom case so you can transport it safely and conveniently. Features In-mould: Lightweight and robust helmet design thanks to the durable combination of EPS and PC shell Aerodynamic design: Rear made of soft EVA material and multi-position design for optimised aerodynamics Ponytail compatibility: helmet very suitable for riders with ponytails Forced Air Cooling Technology: Sophisticated ventilation system for an optimal head climate ActiCage: structural reinforcement integrated in the EPS to optimise stability Zoom Ace: precise adjustment system with non-slip adjustment wheel for individual fit Half ring: Half-enclosing plastic ring connected to the adjustment system for precise adjustment FlowStraps: Aerodynamic, flutter-free and skin-friendly thanks to specially developed strap profile Fidlock magnetic buckle: Quick and easy to use chin buckle Helmet size guide Measure your head circumference and use the measurements below for this helmet model. Head circumference Size Head circumference Small 51–55 cm Medium 54–58 cm Large 51–55 cm