This incredibly light and versatile matte box can be used as a clip-on style or a 15mm rails mount, making it very useful for nearly any production.
It is made out of carbon fiber and has a large "eyebrow" flag to keep extra light off of the lens. You can easily mount two 4 x 4" or 4 x 5.65" filters in it.
The standard lens opening is 114mm to fit most cinema lenses, and you'll also get a variety of lens adapters to fit nearly all common lens sizes (see below for complete list).