Give your lawn a breath of fresh air with lawn aerator sandals. Attach spikes to molded plastic base, strap onto your shoes, and take a walk on your lawn! As the spikes of your lawn aerating shoes puncture the ground, they allow air, fertilizer, and water to get down to the roots. An alternative to renting expensive lawn equipment. One size. Lawn aerating sandals are 5 1/2" x 12" long.