It's a logo of one firman boot. The boot is from the side and facing to the right. It has some lines in it and a circular line at its leg opening. The soles have many jagged lines on the bottom.
This Work Boot icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,000 icons, all in the same style and quality.