This large, not so easy to find life ring is made of Styrofoam / Polystyrene and brightly painted in red & white. Each ring is 29" outside diameter with additional red and white ties holding the 3/8" nylon rope around it, which makes it 30" diameter from the outside of the rope on each tie. The inside diameter of this Life Ring is 17½". It's a great decorative item for the home, office, bar, patio or restaurant and is very popular for corporate events and parties. This life ring makes a great nautical gift and addition to your nautical home decoration.