Attaches to sunglasses or helmet visor - Suitable for cycling and other outdoor activities, our bicycle mirrors can be attached to sunglasses or helmet visors, or helmets with helmet adapters to maintain visibility behind you without having to turn your head. Left Side Wear - Designed for left-hand side use, this bike mirror is suitable for sunglasses and helmets, providing versatility for all cyclists and other outdoor enthusiasts. Minimal Vibration - The 3-pronged clip is adjustable for a secure fit to your glasses, helmet visor or optional helmet adapter. Outdoor activities and bicycle mirror frames are constructed in stainless steel and brass to minimize vibration. Best Visibility - Sunglasses and helmets original event and bicycle mirrors are 28 mm high and 37 mm wide. It extends about 70mm in front of the clip and has a frameless design that provides uninterrupted visibility. The three pivot points provide optimal adjustability on all three axes, so you can easily adjust the orientation of the mirror for a personalized view.