Give your lawn some air without renting a heavy machine! These aerator shoes strap right over your own sturdy shoes. Each sandal has 13 sharp metal spikes (about 2 inches long) on a plastic base. Just walk around your yard and the spikes punch holes in the soil, letting air, water, and nutrients reach the grass roots better. They come with three adjustable straps and metal buckles for a secure fit (one size fits most adults). Assembly is easy with the included wrench. It's a fun, inexpensive way to improve your lawn's health. Perfect for gardeners who want to combine mowing and aerating. Note: Works best on regular lawn soil, not rocky or very hard ground.