It’s not has heavy duty a base as I thought. It’s filled with water. You connect the pieces with a metal piece. One part disconnected and I had to reconnect it after a storm.

The holes are way too small to pour and in, not convenient.

One of the squares was broken when delivered. Felt like a waste of money.

Not very long lasting. One of the holder cracked at the seam already. Can’t even use my umbrella now unless I buy another set of these.

One of the squares leaked from day one and would not hold water. Can be fixed with epoxy but Annoying quality control.

This doesn't really fit well on the 10ft 360 degree umbrella. The joining pins are too short and the distance between the pins is not long enough to reach the hole in the adjacent base.

They are fine if you fill with sand. Cheaply made plastic with poor seams. One of them leaked water at the seam the first time filling it up so I had to use sand instead. Work as advertised when filled with sand.

Broke in the first time of filling in water. Very weak plastic, not durable. I know it is not designed to have someone stands or jump on it but imagine you have these on your patio, the kids or someone will definitely step on it or even jump. The material is not durable enough to handle situation like that.

The seams in each weight were rife with pinprick holes. I used clear tub caulk to seal the entire seam of each weight, which was an easy fix, but should not have been necessary.

The ties provided did not fit holes to tie the base pieces together. Tried emailing the company and sent picture. They were of NO help!