The icon is depicting a sheet of paper. The top right corner is folded down, forming a right triangle pointing inwards towards the center of the paper. The bottom of the triangle is about 1/5 of the way down the page. In the center of the paper are the letters NEF all capitalized.
This NEF icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office
, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 16,000 icons, all in the same style and quality.