Label:YesProduct use: protect the ring and reduce bumps and scratchesProduct color: black, transparent ,white ,pink,purple,Product material: food grade siliconeProduct weight: 5gProduct size: S for 6 7 8 9 10, M for 11 12 13 (optional)Product features: easy to clean, long use time, softSize:2.36*1.66*1.03cm(0.93*0.65*0.41in)Product Size:S size: outer diameter 23.6mm(0.93in), inner diameter 16.6mm(0.65in), thickness 10.3mm(0.41in)M code: outer diameter 26.6mm(1.05in), inner diameter 19.6mm(0.77in), thickness 10.3mm(0.41in)Package includes:1 x Silicone Ring CoverNote:This product is only a protective case and does not include for Oura Ring smart ringDue to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm(0.39-0.79in) measuring deviation due to manual measurement.