Sun Disk Friendship Balls are mouth blown into a flattened style mold so that the shape is about 1 inch thick. This allows for hanging close to the window inside the curtain. The diameter is approximatly 5 inches.
Water glass sun disks are about 1/4 inch thick with sizes up to 16 inches in diamter.
Bright colors to capture the sunlight. Next to the window, fits just right.