Introducing the Manta Ray Ring! Wear this ring as a daily reminder of the important role we all play in protecting the future of these gentle giants. 15% of profits from every Manta-Ray Ring are donated directly to Blue Sphere Foundation to support their efforts in protecting threatened marine species and habitats. Features: Comes in three adjustable sizes: xsmall (size 5), small (size 7.5), or large (size 10.5) Check out our size guide for more details. Sterling Silver. Drawstring bag for transportation.