This is a Two Finger Swipe Left Filled 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 12,800 icons, all in the same style and quality.
There are two matching symbols, one atop the other. They both have left arrows which are then attached to circles. The symbols are placed vertically, the top figure is placed a little behind the bottom.