How to Gift an NFC Networking Ring Without Knowing Their Size
A practical approach to gifting an NFC networking ring when you don't know the recipient's size, plus how the 30-day exchange and profile setup work.
THE SHORT ANSWER
Yes, you can give an NFC networking ring as a surprise even without a confirmed size. Order a close estimate using a standard size chart, lean on the free 30-day exchange window if the fit is off, and plan to set up the public profile together once it arrives.
Giving the Ring Without Knowing the Size
Not knowing someone's ring size does not have to rule out a networking ring as a gift idea. According to the Ping Ring product page, the ring ships in US sizes 5 through 13 and comes with a free size exchange within 30 days of purchase, which turns sizing from a one-shot guess into a two-step process: order close, then correct if needed.
A sensible approach for a surprise gift is to pick the closest size you can estimate, wrap it with that exchange window in mind, and treat the unboxing as the first of two moments rather than the only one. If the fit is off, the recipient still gets to keep the surprise intact while you handle the swap.
Sources: Ping Ring: official product page
Why Ring Size Still Matters for a Passive NFC Ring
A Ping Ring is not a sized piece of jewelry wrapped around sensors, but fit still matters for comfort and for the ring staying put through everyday hand movement. According to the Ping Ring product page, the ring is ceramic, waterproof, and powered passively by the reading phone's NFC field, so there's no battery or charging port to account for in sizing, only the physical fit of the band itself.
Because the specs describe comfort fit rather than an electronics-driven constraint, a close estimate is usually a reasonable starting point. The exchange window exists because exact sizing without an in-person try-on is genuinely hard to nail on the first attempt.
Sources: Ping Ring: official product page
Estimating a Size Without Giving Away the Surprise
If you want to keep the gift a surprise, a discreet estimate beats an outright guess. As an editorial suggestion, consider borrowing a ring the recipient already wears on the intended finger while they are out, and comparing it against a standard ring sizer or a printable size guide, rather than asking them directly.
Another editorial option is to ask a shared friend or family member who might already know the recipient's ring size for other jewelry, framing the question as general curiosity rather than connecting it to a gift. Neither approach removes all uncertainty, which is part of why the exchange window matters.
If a close guess still feels too risky, consider sizing by the recipient's dominant hand and favored finger, since people who already wear rings often have a finger preference you can observe without asking.
Sources: Ping Ring: official product page
Size Reference Table
According to the Ping Ring product page, sizes run from US 5 to US 13, each tied to a specific band circumference in millimeters. This table is useful if you have a circumference measurement from a borrowed ring or a printable sizer and want to match it to the closest available Ping Ring size before ordering.
| US Size | Circumference (mm) |
|---|---|
| 5 | 49.3 |
| 6 | 51.9 |
| 7 | 54.4 |
| 8 | 57.0 |
| 9 | 59.5 |
| 10 | 62.1 |
| 11 | 64.6 |
| 12 | 67.2 |
| 13 | 69.7 |
Sources: Ping Ring: official product page
How the Free 30-Day Exchange Works
According to the Ping Ring product page, the ring includes a free size exchange within 30 days of purchase. That window is the safety net for a sizing guess made without the recipient's input, and it is worth planning your gift timeline around rather than treating as an afterthought.
Because the window is time-bound, it helps to plan the gift date so there is room left after the occasion to confirm fit and request an exchange if needed, rather than opening the gift close to the edge of that 30-day period.
The product page also notes the ring is a one-time purchase with no subscription required for the contact profile, so an exchange for size is a straightforward swap rather than something tied to an ongoing plan.
Sources: Ping Ring: official product page
If the Size You Need Falls Outside the Range
According to the Ping Ring product page, available sizes run from US 5 through 13. If a recipient's finger measurement falls outside that range, the ring as currently offered will not be a direct fit, and a gift-card-style approach, letting the recipient choose and order their own size later, is a reasonable editorial fallback worth considering before purchase.
Sources: Ping Ring: official product page
Setting Up the Profile Together After Unboxing
Part of the fun of gifting a networking ring can be setting it up together once it's unwrapped. According to the Ping Ring product page, the ring works with iPhone and Android phones that have NFC turned on, tapping near the top edge on iPhone and near the back reader on Android, and the recipient does not need an app since the profile opens directly in their phone's browser.
As an editorial suggestion, treat the first tap as a shared moment: open the ring's profile together on the recipient's own phone right after unboxing, so they can see exactly what a future contact would see when someone taps their ring. According to the product page, a tap does not automatically collect anyone's personal information, and the person on the receiving end chooses what to open or save.
This joint first-tap approach also gives the recipient a natural opening to ask questions about the ring in the moment, rather than figuring it out alone later once the wrapping paper is gone. Treating the unboxing as a two-part event, first the reveal, then the walkthrough, turns a single gift moment into a slightly longer shared experience worth planning for.
Sources: Ping Ring: official product page
Timing the Order Around the Occasion
Because any exchange still involves shipping a replacement size, it helps to order with margin before the occasion rather than at the last minute. As an editorial guideline, treat the 30-day exchange window as the outer limit for noticing and correcting a sizing miss, not the target date, so there is buffer time left if a second ring needs to ship.
Keeping the original packaging and receipt until the fit is confirmed is a reasonable precaution, since exchange programs generally expect the item to be in its original condition and documented as purchased within the stated window.
Sources: Ping Ring: official product page
Frequently asked questions
Can I give an NFC networking ring as a surprise gift if I don't know their ring size?
Yes. Order a close size estimate using a standard chart and plan around the exchange window if the fit needs correcting. According to the Ping Ring product page, sizes run US 5 through 13 with a free size exchange within 30 days of purchase.
How does the 30-day exchange work if the ring doesn't fit?
According to the Ping Ring product page, the ring includes a free size exchange within 30 days of purchase, so a wrong first guess can be corrected without extra cost for the size swap itself, as long as it happens within that window.
Will asking about their ring size spoil the surprise?
It can, so many gift-givers avoid asking directly. As an editorial suggestion, borrowing a ring the recipient already wears and comparing it to a standard sizer, or asking a mutual contact who might already know their size, are quieter alternatives.
Do I need a sizing kit before I buy, or can I just estimate?
A sizing kit is not required for a Ping Ring purchase. According to the Ping Ring product page, sizes and their corresponding circumference measurements are listed on the product page, which you can match against a borrowed ring or a printable sizer before ordering.
How do we set up the ring's profile together after it arrives?
According to the Ping Ring product page, tapping the ring on an NFC-enabled iPhone or Android phone opens the profile directly in the browser, with no app required for the person checking it. Doing that first tap together right after unboxing is a simple way to introduce the recipient to how it works.
What if the recipient's size isn't available at all?
According to the Ping Ring product page, sizes currently run from US 5 through 13. If a measurement falls outside that range, consider letting the recipient choose and order their own ring later instead of guessing a size that won't fit.
Does the exchange cover color changes too, or only size?
The Ping Ring product page confirms a free size exchange within 30 days of purchase; it does not describe separate terms for color or style changes, so size is the specific exchange this policy addresses.
Sources and editorial notes
Reviewed October 12, 2026. Combines a size-estimate-then-exchange workflow with a joint unboxing profile setup into a single gifting sequence, rather than treating sizing and setup as separate problems.