・ You can check the rear seats via the mirror. ・ The mirror is made of acrylic resin, so it is hard to break and won't shatter even if it does. ・ The large mirror provides a wide field of view. ・ 360-degree angle adjustment is possible. ・ Simply tighten the belt to the car's headrest; it's easy to attach with the buckle. I've only used it for about 3 months. There is one scratch. Please purchase only if you understand this. Thank you for looking.