Oura Ring Gen3 - Horizon - Matte Black look Size 11 - Stealth Model: JZ90-51385-11 SKU: 6540321 My husband wore this for a couple weeks and decided he needed a size 12! U can size this ring at Best Buy or order a size kit for $10 to be sure of your size! I highly recommend wearing on your pointer finger - so women this is a common size for that. Also a great cycling tool for women’s health! Great buy! It’s amazing intel for your sleep and your overall activity and only requires a charge every 5-6 days!