Our mini keychains are made of Zinc alloy, which is safe for kids and adults! It is light and easy to store, you can relieve stress by bending soft spheres. They will be great gifts for party favors.Each golf stress ball measures 1 inches, this sports balls keychains are adorable and delicate, it is appropriate for you to use this adorable keychain as a plaything, also you can take away the key-ring and left the golf alone, act as a plaything for children to play with them, making the time full of a dynamic atmosphere. These keychains can relieve pressure as a plaything, press the ball without deformation, and easily attract teenagers' interest in playing with them. They can be matched with room keys, car keys, or attached to decorate backpacks every day.