This Event Declined 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 5,500 icons, all in the same style and quality.
The icon's shaped like a square with a star at the center and a horizontal line that runs towards the top. At the top of the square are two vertical rectangles that overlap, one towards the left and one towards the right. At the bottom right of the square is a overlapping circle with a slanted line running through it.