Blank on both sides; excellent for customizing projects too. 18" White Canvas covered flotation foam ring buoys. These classic life buoy rings measure 18" outside x 9" diameter inside opening space x 2" thick foam, with canvas coverings for decorative purposes only. Great if you have plans to add personalized lettering for special events. Get one, or more Life Buoy nautical props for any space where water lovers gather; on your deck, in bars, restaurants, game rooms and vacation homes. To mount just hang rope over anything.