The square umbrella base adapts to other furniture on terraces and patios. The 43 lbs. weight makes it more stable and can be paired with most upright umbrellas on the market. Use plastic retainers instead of traditional knobs to make operation easier and more convenient. There are 4-adjustable feets help the umbrella sits smoothly and prevent tipping over. The cement pouring quality is good and will not crack or leak. Definitely your best choice for supporting an upright umbrella in your yard.