●Adjustable Size: The 11.5* 5 inch Aerator Shoes fit for womens shoe size 6-10, mens shoe size 6-9, with 3 adjustable Velcro straps wraped around your heel and attach with hook-and-loop fasteners, without fear of sliding and reattaching. ●Never Broken of Shoes: The ONLY one who uses 2 Base of ALUMINUM ALLOY and PLASTIC SOLES to ensure sturdy, durable and comfortable. Unlike others only with plastic soles. ●Never Tip of Spikes: Heavy Duty Spikes add oxygen, water and nutrients to soil easily. The yeld strength reaches 675Mpa which is enough sturdy, suitable for any hard soil, rocks, or slopes. ●No Installation Required: the 13pcs stainless steel spikes on each shoe have been assembled. You only need to fasten your straps. Aerate your garden like a pro. ●Economical and Fun Alternative: Steel spikes fully penetrate your soil, providing the yard grass to breathe and absorb more water and nutrients, and it also helps you exercise your legs muscles!(Kindly Note: If you have any question about LAWN AERATOR SHOES, please fell free to contact us.)