Ultrahuman Ring AIR Sizing Kit | Choose from Sizes 6-12 | Sizing Guide for Your Smart Wearable Ring

Sizes available: You have the option to choose from a diverse range of sizes from 6 to 12. Please be aware that we do not offer half sizes at this time.
Trying the sizing ring: For an accurate assessment, you should wear the ring such that the engraved size number is toward the palm of your hand. Wear your ring sizer for at least 24 hours to know your fit.
Finding the correct finger: For optimal comfort and advanced sleep tracking, we recommend you wear the Ultrahuman Ring on your index, middle, or ring finger.
Fit check: The fit should be snug (not too tight or too loose). Here are a few simple ways to assess this — If you rotate the ring on your finger, it should not rotate freely.
Choosing your Ring: After you've precisely determined your size using our sizing kit, head over to Amazon to order your Ultrahuman Smart Ring.