The overall size is 7" x 7" x 15" plus the hook. They weight about 6 lbs each empty. I'm glad they decided against the shepherd's hook idea of hanging them. I'm not sure they would have held up in the sand. Honestly the hardest part was the glue up. Lining up the up end grain glue up was not easy. I didn't trust them to last without the dowel pegs to hold them. No nails, no screw. Just pegs and glue.
You do some amazing work. That concrete work on the sink really looks professional. Tell me I'm not the only one that would take weeks to do a project like this. Ok, I would probably be months. Great job!