This Calendar 5 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 15,100 icons, all in the same style and quality.
A rectangle with the short sides vertical. On top of this a rectangle of the same length, but 1/4 height. 1/4 of the way in from each side are two small upright rectangles, where half extends above the top of the small rectangle and half extends 1/4 into the small rectangle. Inside the large rectangle is the number "5"/