YSISLY Sandbox Cover Square Waterproof Sandpit Cover with Drawstring Tool Dustproof Oxford Cloth Sandbox Cover Pool Protective-Green Sandbox Cover with Drawstring (180x180cm)

I was hoping this would tighten a bit better around a square sandbox but I couldn’t get it to tighten enough to fit around the box, so it keeps blowing away. It is pretty water resistant though, the water puddles up on top of it and does not seep through.