- 360-degree adjustable rearview mirror for bicycles: easily rotate to get the best field of view, enabling quick visibility behind you without turning your head. Improves safety and enhances the overall riding experience, a practical essential for cycling. - High quality optics: the mirror uses a high-resolution acrylic lens that is glare-free and distortion-free. The slightly convex surface provides a larger field of view and a wider angle than a flat mirror for better situational awareness. - Durable construction: PC housing and PA frame offer shockproof and shatterproof protection. The mirror is waterproof and designed to withstand strong sunlight and heavy rain for long service life, staying in good condition under varied weather. - Folding convex design (left side): the left-side mirror folds to protect the lens when not in use, guarding against scratches. The compact folding design makes it easy to transport and store without taking up space. - Easy installation: attach to the bicycle handlebar with a hex key, tightening securely to lock the rearview mirror in place. Once installed, the image remains stable even on bumpy mountain roads. - Practical use scenarios: urban commuting with vehicle traffic and frequent lane changes; mountain biking or rough-terrain riding requiring reliable rear visibility; long-distance road cycling where consistent, unobstructed rear awareness is important.