There are two people in the image. One person is laying down on his stomach with a blanket covering his lower half. The other person is standing above the person laying down and giving him a shoulder massage.
This is a Massage 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.