ULTRAHUMAN Ring AIR Sizing Kit | Choose from Sizes 5-14 | Sizing Guide for Your Smart Wearable Ring

These are great value for money Light weight Accurate to size Great quality

Absolutely spot on, arrived in less than 24 hours and gave me my correct size for less than a quid!

Very good cheap and easy measuring kit. Can’t go wrong with this. Has a good range of sizes so you can find your perfect fit.

This is handy if you’re thinking about buying the Ultrahuman Ring AIR and don’t want to guess the size. The rings give you a better idea of how the fit feels compared with just using a normal ring size, which is probably the main reason to get it. There isn’t much to it though. It’s a sizing kit, so it’s simple and only really useful for that one job. I’d say it’s worth using before ordering the actual ring, especially since smart ring sizing can be a bit different, but don’t expect anything more than a practical size check.

Received quickly and at such a good price. Great for sizing rings but can be crafted to create your own or to see if the width is suitable.

Incredibly good value. The neat packaging alone seems to cover the modest cost. Can't say about accuracy of rings sizing as I haven't used any nor do I have a means of comparing/checking accuracy. Can't lose at this price. Everything solidly made.

Good for sizing. I think it'd be better to keep and store if the rings could be bunches together.

I was tempted to just guess my size for the ULTRAHUMAN Ring AIR, but I'm so glad I ordered this sizing kit first. The kit includes a full range of dummy rings from sizes 5 to 14, made from lightweight, comfortable material that feels very similar to the actual smart ring. Wearing each size for a full day (and night) gave me real confidence in my choice – something a simple finger measurement or printable guide just can't provide. What I appreciated most was being able to test the fit across different conditions. My fingers swell slightly overnight and after exercise, and the sizing kit allowed me to find the perfect "Goldilocks" size – snug enough to stay secure but comfortable enough to sleep in and remove easily. The kit also helped me realize I needed a different size for my index versus middle finger. The process is straightforward: try on the different sizes, wear them during normal daily activities, and then confidently order your final size online. It saved me the huge hassle of an international return or exchange. For a relatively small investment (often refundable or discounted off the final ring purchase), this sizing kit is absolutely worth it. Five stars – don't skip this step if you want your smart ring to fit perfectly!

The box has various sizes and the build quality was good. It was just plastic ring and do not expect any tracking using the sizing ring. It can only help you understand how the real ring would be. After two nights usage I lost interest in the real ring because the size of the ring I felt could be obstructive to daily routines. However, this is a personal opinion and need not be applicable to all. The ULTRAHUMAN rings are best in fitness tracking at least as per the reviews I read online.

Molto utili per provare la misura dell'anello da acquistare e così non fare errori, ci sono praticamente misure per ogni tipologia di dito, si parte da quelli molto piccoli fino ad arrivare a quelli decisamente molto larghi. Sinceramente anche questi di prova, esteticamente, non sono male. Prezzo ottimo!

Feliz de haberlo comprado antes de comprar el anillo porque adivinen? Me hizo decidir no comprarlo. Es muy grande e incomodo para mi gusto.

Got this for 1 aed. Packaging alone is quality. Size starts from 5 - 14

Clever way to ensure you can buy the right ring, and do not waste any time or money.