This can be described as a large alphabet U whose edges have a small curve pointed towards outside on both edges and have small rectangular bar placed on top of it whose length is exactly equal to the width of the alphabet U. Also there are two small curved lines underneath the alphabet U with right one bend towards east or right and left one bend towards west or left.
This is a Bath 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 13,300 icons, all in the same style and quality.