Made of high-quality PE these weight plates are durable and resistant to aging or cracking. Â The no-pinch design enables easy and safe installation without hurting fingers. The 1 1/4'' wide open slot is suitable for most canopy legs. It is worth mentioning that each weight plate has an injection spout that allows you to fill in water or sand to increase the weight to better hold down the canopy. If necessary you can also choose to stack weight plates together. Compared with sandbags the canopy