How to choose the right size?

If you're uncertain about your Ultrahuman Ring AIR size, we recommend opting for the free sizing kit that we'll promptly dispatch it upon placing a Ring order. The sizing kit includes high-quality plastic ring sizers ranging from sizes 5 to 14. Please note that Ultrahuman Ring AIR sizes may differ slightly from standard ring sizes, and we don't offer half sizes. Download the sizing chart.

How to know your size?

Try our sizing kit or pop into a sizing store ideally, alternatively select your desired finger then:

  1. Cut a strip of paper and place under your desired ring finger
  2. Tightly wrap paper around your finger (it needs to be tight to get the ideal size)
  3. Draw a line on the paper at points of over lap
  4. Measure the distance between the lines - thats the circumference

Sizing Kit

You can order and use a sizing kit and try the rings on your index, middle, and ring finger to check for the best fit. There is a charge for delivering and returning the kit but this will be deducted from your Ring purchase when you make one.

Or visit The Sneaker Shack, Gardens or The Sneaker Shack, Rosebank for on-hand samples.

Order Sizing Kit

Which finger is optimal?

We suggest wearing the ring on your index, middle, or ring finger. The ultimate choice among these depends on which finger provides the most comfortable fit or aligns with your personal preference. Here's a more detailed guide to determining the right ring size.

Ultrahuman Ring AIR ®

The world’s most comfortable and compact smart ring that monitors your sleep, movement and recovery.

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