Our umbrella bases are made from solid metal and powder coated for lasting durability. Each umbrella base coordinates with one of our market umbrellas: the MB01 25 lb. base with the MU01 9' umbrella, the MB02 50lb. base with the MU02 10' umbrella, and the MB03 55 lb. base with the MU03 11.5' umbrella. Each base fits neatly underneath our teak tables (Note: MB01 is not sized for TR30).