Product Description: Material: ABS Black color Package weight: approx. 58g Total length: approx. 24cm/9.4" Mirror Size: Approx. 5 x 3.5cm/1.9" x 1.3" Package Included: 1 x Bike Mirror with Strips Hook-and-loop (Not include helmet) [Premium Material]: This bicycle helmet mirror is made of high quality plastic, which is very durable and lightweight to carry [360 degree adjustable]: Featured in flat lens design, the bike mirror provides a wide field of vision, 360 degree rotation design which is adjusted to any viewing angle, provides a clear and safe view of road conditions /p> [Clear View Flat Mirror]: Super reflective mirror to ensure crystal clear vision without distortions; It's easy to see any distance behind you, similar to a car rearview mirror [Easy to install]: Simple installation, come with hook-and-loop strips, tape the inside of the helmet first, then attach the mirror to the hook-and-loop strips, adjust the mirror for a proper view, mounted well in minutes [Universal]: Compatible with most popular cycling helmets, vibration free, it can be used left and right