Customer Ratings & Reviews

Makes it easy to determine your correct ring size before purchase. The kit is straightforward to use, comfortable to wear, and ensures you get a perfect fit for your Ultrahuman Ring AIR. Plus, the cost of the sizing kit is credited toward your actual ring purchase, making it both practical and economical. A smart, stress-free step before investing in your fitness ring.

Definitely get this before purchasing your ring. Wear it for a few days straight because your finger swells and shrinks over a 24hr period. Actual ring feels a tiny bit smaller

I am glad that I got this fitting kit, because I would have been 2 sizes off. My daughter decided to use it in a different finger in her non-dominant hand due to comfort and feel.

This ring kit is excellent, it gives us the opportunity to try out the different sizes. This kit helped me decide on which size I felt the most comfortable with after wearing it for 3 days. I can make a better determination on which size I believe will be best suited for me in my needs. I highly recommend if you are in the market for a fitness ring tracker.

Very helpful Can’t wait to actually get my ring!!

perfect to find my ring size! with the credit, it is almost free.

This allows you to try on the ring before your order it, so you can ensure you pick the right size. Your finger can change size throughout the day, so it's good to help make sure you don't get one that will be too tight later. It costs $10, but you get a $10 gift certificate with it, so it's basically free.

Gave me a chance to see if this is what I wanted or not.

Good way to measure the size. But make sure to start with larger size to prevent ring from getting stuck.

Glad I purchased the sizing kit! I was able to buy the correct ring size

Came with all the different sizes plus a sample sheet with all the different colors

Definitely would recommend getting the kit before purchasing the ring. The kit gives you 10 sizes to choose from with is convenient. I would say the kit size matches the actual rind size. Follow instructions to find a size that fits.

Very useful to test ring size before purchase of Ultrahuman ring. Size matched up perfect for me.

Item as expected. The box the rings come in is very plain looking, but the rings are handy.

Was helpful so I didn’t have to go back and forth to get the right size

Nice sizing kit, works well, many sizes to choose from.

Perfect item to have before buying your UltraHuman ring. The sizes matches perfectly to the actual ring so no need to worry about the size being off. Wear for 48hrs to test wearability

Really necessary to wear a couple of days before you purchase the ring gives you idea about comfort.

Did its purpose, allowed us to size as to what size tracker ring we needed.

it works well. I took away a star because it smells really weird (trash-like smell(?))