The result of ten years of development of bicycle mirrors, the Third Eye Pro Helmet Mirror offers a small, easy, and lightweight way to stay safe while riding in traffic. It's shatter-resistant aluminized glass mirror lets you see what’s coming up behind you on the road or bike path. Installation is easy as it attaches to either side of any helmet using the included adhesive pad. The mirror and arm are both adjustable to give you the perfect view. Stop looking back over your shoulder and be safer! Bonus - Made in the USA.