Lawn Aerator Shoes, UNIFUN Pair of Spikes Aerator Sandals with Metal Buckles and 3 Straps - Heavy Duty Spikes Greener Grass, Less Weeds - Using UNIFUN Lawn Aerator Shoes, Water, fertilizer and air will be gotten deep into grass roots, which also increase water and nutrients penetration of your lawn. Reduce costs - Not need to rent expensive machines to grow grass but simply wearing these Spikes Aerator Sandals and walking in your lawn whenever you like. Durable Metal Buckles - 3 durable straps with strong metal buckles to avoid loosen and get hurt. High Capacity - 13 strong heavy steel 2-inch spikes for each shoe and a small wrench to reinforce the screws. Security and Reliability - Fit all size of shoes by adjusting the straps.