1. ultra-ShiFttm ergonomicS: ensures a fi rm grip on the handlebars with fast and precise control of the levers. The special ergonomic design makes it possible to assume three different hand positions on the levers compared to the two traditional ones.2. vari-cuShiontm hooD: made of non-allergenic elastic material, with variable cushioning that provides the maximum comfort and safety even after many hours on the bike. Thanks to a special treatment, it is resistant to UV rays and maintains its original colours without fading.power-ShiFttm mechaniSm:extremely precise and rapid, it allows you to upshift three sprockets at a time or downshift by one with just a single action. 3. Double curvature brake lever:allows you to engage and modulate the brake safely from any hand position.