• Ring Air Sizing Kit Ring Air Sizing Kit
  • Promise card
  • Ring Air Sizing Kit Ring Air Sizing Kit
  • Promise card
  • Ring Air Sizing Kit Ring Air Sizing Kit
  • Promise card

Product Description

Key Benefits

  • Find your ideal fit with ten distinct sizing options.
  • Ensures accurate measurements based on the actual ring.
  • Correct sizing is crucial for reliable health insights.


Finding the right fit is crucial for the best experience with your Ultrahuman Ring AIR. This specially designed sizing kit... Read more

Key Benefits

  • Find your ideal fit with ten distinct sizing options.
  • Ensures accurate measurements based on the actual ring.
  • Correct sizing is crucial for reliable health insights.


Finding the right fit is crucial for the best experience with your Ultrahuman Ring AIR. This specially designed sizing kit includes ten unique sample sizes, helping you identify your ideal match before choosing a final size. A proper fit ensures comfort for all-day wear and prevents the ring from being too loose or too tight, which is vital for accurate health tracking.

Unlike standard ring sizes, Ultrahuman Ring AIR sizes are unique to the brand and tailored for a personalised fit. The kit’s ten sample rings cater to various finger sizes, ensuring reliable contact between your skin and the ring’s sensors. By using the sizing kit, you’re setting up your Ultrahuman Ring AIR to deliver dependable health insights from day one.

While the sizing rings are made from different materials than the final product, they mimic the feel and fit of the actual Ultrahuman Ring AIR.

Why It's Healf

Ultrahuman is a dedicated team of biohackers and health and fitness enthusiasts who believe in making data-driven decisions for optimal health and wellbeing. Their mission is to empower individuals with the knowledge needed to improve their health and lifestyle choices. As the world’s most comprehensive self-quantification platform, Ultrahuman is committed to providing innovative health-monitoring wearables that enhance overall wellbeing. Experience smarter health monitoring with Ultrahuman and unlock your potential for better living.

Here at Healf we do the work for you, every product goes through a 3 step curation process of Discovery, Expert Validation, and Community Testing. So you know you are only getting the best.

Delivery & Returns

SHIPPING INFORMATION:

At Healf we prioritise safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.


Option

UK Standard Delivery

Next Working Day Delivery

International Deliveries

Est. Delivery

2-3 Working Days

Next Working Day*

7 Working Days**

Orders <£50

£3.95

£5.95

£22.95 (Europe)

Orders >£50

FREE

£5.95

£49 (International)


*(if placed before 12.00)

**(up to 4 weeks)

UK Standard Delivery: Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.95.


Next Working Day Delivery: For when you need our products urgently, we offer a next working day shipping for £5.95. For orders placed before 12.00 we will ship it the same day to ensure you receive your order the next working day.


RETURNS POLICY:

If for any reason you are not satisfied with your order, we provide free 365 day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com and we’ll send you a return slip and help to arrange a collection. The item you return must be sent in the same condition as received, and inside the original packaging. Once received we will notify you via email.

For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.

Suggested Use

Select the Optimal Finger:
Choose the finger and hand for wearing the ring. Try it on your index, middle, and ring fingers for the best fit. Avoid the thumb and little finger, as accuracy is best on the other fingers.

Opt for a Secure Fit:
Once you’ve selected a finger, position the sensor ridges on the palm side. Ensure the ring fits comfortably yet securely at the base, maintaining stable contact without discomfort. If your skin touches the full inner circumference and moves with the ring, you've found a good fit. Check sizes up and down to confirm.

Take the Two-Night Sizing Test:
Keep the ring on overnight for at least two nights to assess fit, as fingers expand and contract naturally. Monitor how it feels during different tasks and times of the day. A snug fit is essential for accurate data tracking.

Verify Your Size:
If you're unsure between sizes, try each size on your index, middle, and ring fingers on both hands. Choose fingers where the base and knuckle widths are similar. A loose ring won't capture biomarkers accurately, so select a snug fit that works on multiple fingers to accommodate fluctuations.

Final Checklist:
-The ring fits snugly at the base of your finger.
-The sensor ridge is on the palm side.
-Your skin moves with the ring when you rotate it.
-The ring feels snug yet comfortable during the Two-Night Sizing test.
Once you’ve checked these, you’re ready to submit your size.

Submit Your Preferred Size:
Scan the QR code on the sizing kit to submit your choice. Log in with the same email used for your Ultrahuman purchase. Find the submission option under the home tab and ensure your app is updated to the latest version.

Ring Air Sizing Kit

Say goodbye to guesswork. This sizing kit features ten unique sizing options, ensuring you find your perfect fit for the best experience with your Ultrahuman Ring AIR.

Regular price $12.91
Regular price Sale price $12.91

In stock. free delivery Next day delivery available Next day delivery available if you order within

Buy now Pay later from $3.22/mo with

Regular price $12.91
Regular price Sale price $12.91

Buy now Pay later from $3.22/mo

Free UK shipping over £50, free returns

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Visa
Frequently bought together
  • Buy both for

    Total

Product Description

Key Benefits

  • Find your ideal fit with ten distinct sizing options.
  • Ensures accurate measurements based on the actual ring.
  • Correct sizing is crucial for reliable health insights.


Finding the right fit is crucial for the best experience with your Ultrahuman Ring AIR. This specially designed sizing kit... Read more

Key Benefits

  • Find your ideal fit with ten distinct sizing options.
  • Ensures accurate measurements based on the actual ring.
  • Correct sizing is crucial for reliable health insights.


Finding the right fit is crucial for the best experience with your Ultrahuman Ring AIR. This specially designed sizing kit includes ten unique sample sizes, helping you identify your ideal match before choosing a final size. A proper fit ensures comfort for all-day wear and prevents the ring from being too loose or too tight, which is vital for accurate health tracking.

Unlike standard ring sizes, Ultrahuman Ring AIR sizes are unique to the brand and tailored for a personalised fit. The kit’s ten sample rings cater to various finger sizes, ensuring reliable contact between your skin and the ring’s sensors. By using the sizing kit, you’re setting up your Ultrahuman Ring AIR to deliver dependable health insights from day one.

While the sizing rings are made from different materials than the final product, they mimic the feel and fit of the actual Ultrahuman Ring AIR.

Why It's Healf

Ultrahuman is a dedicated team of biohackers and health and fitness enthusiasts who believe in making data-driven decisions for optimal health and wellbeing. Their mission is to empower individuals with the knowledge needed to improve their health and lifestyle choices. As the world’s most comprehensive self-quantification platform, Ultrahuman is committed to providing innovative health-monitoring wearables that enhance overall wellbeing. Experience smarter health monitoring with Ultrahuman and unlock your potential for better living.

Here at Healf we do the work for you, every product goes through a 3 step curation process of Discovery, Expert Validation, and Community Testing. So you know you are only getting the best.

Delivery & Returns

SHIPPING INFORMATION:

At Healf we prioritise safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.


Option

UK Standard Delivery

Next Working Day Delivery

International Deliveries

Est. Delivery

2-3 Working Days

Next Working Day*

7 Working Days**

Orders <£50

£3.95

£5.95

£22.95 (Europe)

Orders >£50

FREE

£5.95

£49 (International)


*(if placed before 12.00)

**(up to 4 weeks)

UK Standard Delivery: Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.95.


Next Working Day Delivery: For when you need our products urgently, we offer a next working day shipping for £5.95. For orders placed before 12.00 we will ship it the same day to ensure you receive your order the next working day.


RETURNS POLICY:

If for any reason you are not satisfied with your order, we provide free 365 day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com and we’ll send you a return slip and help to arrange a collection. The item you return must be sent in the same condition as received, and inside the original packaging. Once received we will notify you via email.

For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.

Suggested Use

Select the Optimal Finger:
Choose the finger and hand for wearing the ring. Try it on your index, middle, and ring fingers for the best fit. Avoid the thumb and little finger, as accuracy is best on the other fingers.

Opt for a Secure Fit:
Once you’ve selected a finger, position the sensor ridges on the palm side. Ensure the ring fits comfortably yet securely at the base, maintaining stable contact without discomfort. If your skin touches the full inner circumference and moves with the ring, you've found a good fit. Check sizes up and down to confirm.

Take the Two-Night Sizing Test:
Keep the ring on overnight for at least two nights to assess fit, as fingers expand and contract naturally. Monitor how it feels during different tasks and times of the day. A snug fit is essential for accurate data tracking.

Verify Your Size:
If you're unsure between sizes, try each size on your index, middle, and ring fingers on both hands. Choose fingers where the base and knuckle widths are similar. A loose ring won't capture biomarkers accurately, so select a snug fit that works on multiple fingers to accommodate fluctuations.

Final Checklist:
-The ring fits snugly at the base of your finger.
-The sensor ridge is on the palm side.
-Your skin moves with the ring when you rotate it.
-The ring feels snug yet comfortable during the Two-Night Sizing test.
Once you’ve checked these, you’re ready to submit your size.

Submit Your Preferred Size:
Scan the QR code on the sizing kit to submit your choice. Log in with the same email used for your Ultrahuman purchase. Find the submission option under the home tab and ensure your app is updated to the latest version.
Shop by collection
Vitamins & Supplements
Shop collection
Shop by collection
Andrew Huberman Approved
Shop collection

Need expert advice? Take the Healf quiz.

Discover the best products personalised to you and your goals.

Take our quiz

Frequently Asked Questions.

How are the products selected?

Our main focus here at Healf is to make sure you are getting access to the best global wellbeing brands that align with our core values, where we believe wellbeing is characterized by The Four Pillars - EAT, MOVE, MIND, SLEEP. We hand select products all over the world and put them through our strict three step curation process which entails discovery, expert validation, and our community testing. In order to protect our community we always quality check all ingredients of the products we select, and do not feature products with any ingredients we mention on our Healf Banned Ingredient List.

Do you have resources or articles on maintaining a healthy lifestyle?

Our team of in-house experts stay up to date with the latest research on wellbeing. They constantly evaluate health trends and make sure to filter real vs. faux and deeply understand that there truly is no ‘one size fits all’ approach to your wellbeing. You can check the Healf journal here and make sure to subscribe to our mailing list for more content.

Can I find more information about the ingredients used?

We love people who check ingredients. You’ll find detailed information about the ingredients in every product page and if you find something you’d like to flag with us or have more questions, drop us a message.

Go to FAQs

Three step
curation process

The Healf stamp of approval: Here at Healf every product goes through a rigorous Three Step Curation Process, so you know you are only getting the best.