This Calendar 22 icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,400 icons, all in the same style and quality.
The logo is a calendar shape. A rectangle at the bottom, with a narrower rectangle at the top, running from left to right. At the top of the narrow rectangle are two small shapes indicating rings holding the calendar together. The number 22 is displayed in the center of the largest rectangle.