It is made of 1/8th inch mirrored acrylic, which is stronger, lighter and more shatter-resistant than normal glass, but just as reflective.
It measures approx. 12" tall, with varying widths (custom sizes may be available). It is recommended for hanging with 3M Command Strips, which are appropriate for affixing it to most wall covers without risk of damage (including paint).
See more of my products here: http://www.etsy.com/shop/PlainlyStated
Have any questions? Contact the shop owner.