This particular icon features three black lines that have ends that curve. The middle one has the biggest curve, and the other two on the outside are curled away from the big one in the middle.
This is a Air 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.