You wear a smart ring because you want the data. The ring itself has always looked like what it is. The Flow Cloak fixes that. A hand-finished sterling silver Cloak that slides over your Oura Ring in three seconds. Jewelry on the outside, your tracking untouched on the inside. The tracker disappears. The jewelry stays. About the material Sterling Silver 925, rhodium-plated for a permanent mirrored shine. An organic molten texture wraps the band, polished by hand so no two pieces are identical. Built to be inherited, not upgraded. Built for the Oura Ring Gen 4 and Gen 5 A U-shaped channel cradles the outside of your Oura Ring. The inside stays open against your skin, so every sensor keeps working. Heart rate, temperature, blood oxygen, and movement all read just like Oura made them to. Specs Material: Sterling Silver 925, rhodium-plated Weight: approximately 10 grams Compatible with: Oura Ring Gen 4 (sizes 4 through 15) and Gen 5 (sizes 6 through 13) Not compatible with: Oura Ring Gen 4 Ceramic, Oura Ring Gen 3, other smart rings On and off: 3 seconds, no tools, no permanent install Sensors: All Oura readings unaffected (heart rate, temperature, blood oxygen, movement) Designed in Cincinnati, finished by hand Lead time and shipping Each Cloak is made to order. 6 to 8 weeks from order to delivery. Free worldwide shipping with duties included. 30-day returns. Care Wipe with a soft cloth. Avoid chlorine pools and harsh cleaners. The rhodium plating holds up to daily wear. Anything that would damage fine jewelry will damage the Cloak.