[Compatibility]Specially designed for Oura Ring Gen 3. (Oura Ring is NOT included)[Perfect Fit]High elastic material makes it flexible and fits a wide range of sizes. Please choose S for size 6/7/8/9/10, M for size 11/12/13.[Scratch Resistant]Wearing Oura Ring for workouts, chores, and lifting weights may scratch it, but with our Oura Ring silicone cover you can keep it looking all the time.[Easy to Clean]When the Oura Ring cover gets dusty, you can simply rinse it with water to make it look again.[Skin-Friendly]Our Oura Ring 3 protector is made from soft and odorless silicone so they won't cause allergies or discomfort to you fingers.Specification: Mcolor:black+transparent whiteMaterial:Silica gelPackage Contents:2xRing Cover for Oura RingOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.