Looks like a rectangle with the top half folded in front to create a sort of tube shape. near the top inner region of the rectangle are two parallel horizontal lines. beneath this is a ribbon like drawing.
This is a Contract 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 13,900 icons, all in the same style and quality.