Unique Design: Our lawn aerator shoes use a spring device that automatically bounces the soil off and away when you lift your foot. This is a shoe that can solve the pain points of other lawn shoes using clay, with a unique automatic spring device. No Assembly Required; Skip all the tedious assembly steps, no preparation required. Just take out the inflatable shoes from the box, put them on and attach the Velcro , and you can work in your garden. Adjustable Size: Inflatable shoe size is 11.8x7.9 inches, fits women's shoe size 6-10, men's shoe size 6-9. The three Velcro strips can be adjusted to find your suitable position. If your shoe size is smaller, you can use two strips of Velcro to secure it. 2.35-Inch Nails: Each lawn shoe is double-layered, making walking on hard surfaces more stable than single-layer lawn shoes. There are also 13 heavy-duty metal spikes that create deeper holes in the ground, allowing fresh air, water, and nutrients to seep in, creating a green, healthy lawn! Thoughtful Design: Compared with other lawn shoe straps, our last Velcro is made of softer material, which can prevent friction with the skin and cause discomfort. The lawn shoe base adopts anti-slip texture, which is both beautiful and non-slip. Efficient Lawn Aeration: Double-layer spring lawn shoes make lawn aeration smoother and more efficient. Its application helps improve soil conditions, promotes lawn health and growth, and helps your lawn look better and newer. MAGTSMEI Lawn Aerator Shoes for Grass Upgraded Double Layer Aerator Lawn Tool Spring Lawn Aerating Shoe No-Installation Heavy Duty Spiked Aerating for Yard Patio Garden Black, Patent Authorized