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Ultrahuman 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.
In stock. Next day delivery available.
Buy now, pay later from £0.12/mo with
Free UK shipping over £50, free returns.
Key Benefits
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Find your ideal fit with ten distinct sizing options.
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Ensures accurate measurements based on the actual ring.
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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.
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.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
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 £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
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 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.
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Frequently asked questions
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Journal offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
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Translate your body’s data
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Healf Curation
Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
Discover more
The Discovery
Expert Validation
Community Testing