Orders are processed and shipped within 1-3 business days.
*Every CUDIS 002 Sporty Ring includes a free one-year warranty, with replacement support available for verified product issues upon return.
🚚 Shipping: US 3-5 Days | International 2-4 Weeks.
| Size | Circumference (mm) | Diameter (mm) | US | UK/AUS | ITALY | KR | JP | FR | DE |
|---|---|---|---|---|---|---|---|---|---|
| 6 | 51.9 | 16.5 | 5.5,6 | M | 12 | 12 | 12 | 52 | 16.5 |
| 7 | 54.5 | 17.3 | 6.5,7 | N,O | 13,14.5 | 14,15 | 13,14 | 53,54.5 | 17,17.25 |
| 8 | 57 | 18.1 | 7.5,8 | P,Q | 16,17 | 16,17.5 | 15,16 | 56,57 | 17.75,18 |
| 9 | 59.5 | 18.9 | 8.5,9 | R,S | 18.5,19.75 | 18.75,20 | 17,18 | 58.5,59.5 | 18.5,19 |
| 10 | 62.1 | 19.8 | 9.5,10 | T,T½ | 21,22.25 | 21,22.25 | 19,20 | 61,62.5 | 19.5,20 |
| 11 | 64.6 | 20.6 | 10.5,11 | U½,V½ | 23.5,25 | 24,25.25 | 22,23 | 63.5,65 | 20.25,20.75 |
| 12 | 67.2 | 21.4 | 11.5,12 | X¾,Y | 26,27.5 | 26.25,27.75 | 24,25 | 66,67.5 | 21,21.25 |
| 13 | 69.7 | 22.2 | 12.5,13 | Z,Z+1 | 28.75,30 | 29,30.25 | 26,27 | 67,70 | 21.75,22 |
| 14 | 72.5 | 23.1 | 13.5,14 | Z+3 | 32 | 32 | 28 | 72.5 | 23 |
If you are between sizes, opt for the larger size.
*Don't know which size to choose? Share your finger circumference with a CUDIS advisor for expert help.
[Contact Support: support@cudis.xyz]
1.Use a flexible measuring tape or length of string. Wrap it around the finger you'll wear your ring on - if you're creating a ring stack, consider where on your finger the ring will sit. If using string, mark the point on the string where the ends meet with a pen.
2.Lay the string on a flat surface and use a ruler to measure the length (in inches or millimeters) up to the mark. Compare your measurement to the size chart above to determine your ring size. If you are between sizes, opt for the larger size.
A helpful method if you're surprising someone with a gift or treating yourself.
1.Choose a ring that already fits your finger well.
2.Measure the interior diameter of the ring in millimeters (mm).
3.Use the measurement chart above to match the size of your ring to the closest size in mm. The interior of the ring should align with the outer edge of the circle.
US
5.5,6
UK/AUS
M
ITALY
12
KR
12
JP
12
FR
52
DE
16.5
If you are between sizes, opt for the larger size.
*Don't know which size to choose? Share your finger circumference with a CUDIS advisor for expert help. [Contact Support: support@cudis.xyz]
1.Use a flexible measuring tape or length of string. Wrap it around the finger you'll wear your ring on - if you're creating a ring stack, consider where on your finger the ring will sit. If using string, mark the point on the string where the ends meet with a pen.
2.Lay the string on a flat surface and use a ruler to measure the length (in inches or millimeters) up to the mark. Compare your measurement to the size chart above to determine your ring size. If you are between sizes, opt for the larger size.
A helpful method if you're surprising someone with a gift or treating yourself.
1.Choose a ring that already fits your finger well.
2.Measure the interior diameter of the ring in millimeters (mm).
3.Use the measurement chart above to match the size of your ring to the closest size in mm. The interior of the ring should align with the outer edge of the circle.
TRAINING
Track heart rate, intensity, and recovery in real time. This durable smart ring acts as your AI fitness coach, helping you optimize training load, avoid burnout, and improve performance session by session.
SWIMMING
5 ATM water resistance with continuous tracking. Your performance data stays with you, even in the pool.
ON THE GO
Track endurance, steps, and energy levels wherever you go, so you always know how far you can push.
SLEEP
Track sleep stages, recovery, and health metrics through the night. Built to disappear. Designed to never stop caring.
Based on the statistics from our existing 30,000+ ring users, Daily CUDIS wear is linked to 15 more hours of Deep Sleep per month, 6 more hours of monthly sports activity, 15% higher vitality, and 30% less chance of getting injury.
Understand your body’s readiness for the day by seeing how well you’ve recharged from previous physical demands.
Monitor your key biometric signals for a comprehensive 24/7 overview of your health.
Analyze your sleep stages and quality to understand how your body rests and wake up feeling truly refreshed.
Track over 50 different activities - from running and skiing to rock climbing, and even everyday movements like walking your dog!
Identify how your body responds to daily pressures by tracking physiological changes throughout the day.
Discover your biological health status by comparing your body’s internal data to your actual chronological age.
Receive personalized, data-driven guidance and actionable health tips tailored to your unique lifestyle and goals.
Measure the physical exertion placed on your body to help you balance intensity with rest.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
Shipping Information
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Customer Support
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FAQ’s
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Contact Us
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CUDIS Sporty Ring
Charging Pod
Type C Wire
Silicone Bands
2–4 weeks depending on the destination, with delivery in under 2 weeks for Asia and the US.
For orders that haven’t shipped yet, please contact us atsupport@cudis.xyz.
After you place your order, we’ll send you a confirmation email with your order details. Once your order ships, you’ll receive a separate shipping confirmation email that includes a tracking link.
