The S21 Ultra XUNDO JAZZ SERIES ring case fits comfortably over your finger to provide added security when holding the phone and can also be used as a kickstand for hands-free viewing. Exquisite artistic and delicate product design. Adopt high quality material and gentle hand feeling. Ultra Thin, dust proof, shateer-proof and scratch-proof. Gives your phone strong protection. Durable cover to protect your mobile phone from damage.