The Sleek Smart Ring That Jennifer Aniston, Kim Kardashian, and Gwyneth Paltrow Have Worn Is on Sale at Amazon

Isabel Garcia, Senior Shopping Writer at PEOPLE, highlights a health and fitness tracker on sale at Amazon. The Oura Ring Gen3 Horizon monitors biometrics, sleep, activities, and stress. Celebrities like Jennifer Aniston, Kim Kardashian, and Gwyneth Paltrow endorse it.