Ultrahuman Ring SIZE KIT

Ultrahuman Ring sizes are different from standard ring sizes, so it is essential to SIZE FIRST before purchasing your Ring AIR. The Ultrahuman Sizing Kit includes 10 high-grade plastic sizers covering all Ring AIR sizes (5–14), plus a colour swatch card showing all 6 available colours: Aster Black, Space Silver, Bionic Gold, Matte Grey, Raw Titanium, and Brushed Rose Gold.
 
 Instructions: Wear the sizing ring for at least 24–48 hours (including overnight). The ring should not rotate freely on your finger. Recommended fingers: index, middle or ring finger for optimal comfort and sensor accuracy.