* Ensure optimal accuracy and comfort day and night by finding your perfect Oura Ring 4 size before it arrives * * Wear your ring on any finger, with the index, middle or ring finger recommended for optimal performance * * Get a snug and secure fit by making a fist to check there are no gaps between the ring and your finger * * Read your size effortlessly by wearing the sizing ring with the number visible on top of your hand * * Find your exact match with Oura Ring 4 sizing available from size 4 to 15
