The icon is shaped like a square with the top left corner being curved and the top and bottom right side corners being pointed. The bottom left corner curves into a oval shape that runs the length of the square but doesn't close at the end. Inside the square is an arrow pointing down with 3 dots at it's tail.
This is a Borrow Book icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,300 icons, all in the same style and quality.