It is the outline of two footprints. There is a left and a right footprint. Both the left and right foot each have 5 toes. This looks like a souvenir keepsake a parent would make of their childs footprints.
This Baby Feet 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.