42 mm Ring Option
The smallest of the four included base-ring options. Compare it with your measurement instead of automatically choosing the tightest fit.
You do not need to choose only one ring size before ordering. The featured configuration includes all four base-ring options in the same kit.
All 4 Ring Sizes Included
Compare adjacent ring options after delivery instead of committing to one fixed base-ring size before ordering.
Fulfilled by Amazon. Confirm current price, delivery and order options directly on Amazon.
Not sure yet? See how to measure ↓
One Kit, Four Options
The featured ZENZOONE configuration includes 42 mm, 44 mm, 46 mm and 49 mm base rings together. That allows you to compare nearby options instead of making the entire purchase depend on one preselected ring size.
Measurement
Measurement gives you a starting point. Because this kit includes four nearby ring options, you can compare fit rather than relying on a single fixed size.
Take the measurement without pulling the measuring tool excessively tight.
Compare the measurement with the included ring options rather than automatically choosing the smallest ring.
If two nearby options seem plausible, the included four-ring kit gives you room to compare the fit.
Persistent pain, numbness or excessive pressure are reasons to stop and reassess the configuration.

Included Ring Options
These are four included ring options in the same product kit, not four separate products that must be selected before ordering.
The smallest of the four included base-ring options. Compare it with your measurement instead of automatically choosing the tightest fit.
One step above the 42 mm option and useful when comparing two nearby sizes.
Provides additional room while using the same low-profile device configuration.
The largest included base-ring option for users who need more room around the base.
Confirm current product details, price and availability on Amazon.
Fit Check
The ring should help keep the configuration positioned without excessive movement.
A tighter fit is not automatically a better fit. Persistent pressure should be reassessed.
Judge the fit during ordinary movement instead of checking it only while standing still.
Avoid These Mistakes
Assuming the smallest included ring must automatically be the best option.
Pulling the measuring tool excessively tight while measuring.
Ignoring discomfort that appears after sitting, walking or normal movement.
Treating 42, 44, 46 and 49 mm as universal Small, Medium, Large and XL body-size categories.
Continuing to use a configuration that causes persistent pain, numbness or unusual pressure.
Sizing FAQ
No. The featured ZENZOONE kit includes all four base-ring options: 42 mm, 44 mm, 46 mm and 49 mm. You are not ordering only one fixed ring size.
Measure carefully in a relaxed state and compare your measurement with the available ring options. If you are between nearby options, compare adjacent sizes instead of automatically choosing the smallest.
No. Smaller does not automatically mean better. Excessive pressure, persistent discomfort or numbness are signs that the fit should be reassessed.
The current featured configuration includes 42 mm, 44 mm, 46 mm and 49 mm base rings in the same kit.
Current pricing, availability, shipping and order options should be confirmed directly on the Amazon product page because they can change.
Four Ring Options Included
The featured configuration includes 42 mm, 44 mm, 46 mm and 49 mm base rings in one kit. Confirm current pricing, availability and order details directly on Amazon.
Pricing, availability, delivery and order options may change on Amazon.