Smart ring sizing updates

A dated record of the official-source checks behind our smart-ring sizing guides. A brand kit or sizing flow remains the final order check.

Latest source review

This review records the currently published ranges, sizing guidance and availability notes. It does not turn a jewelry-size conversion into an order guarantee.

Evie Ring

last verified 2026-08-20 · next review2026-09-03

Size range: Historical sizes ~5–12
Sizing kit: New orders and shipments are currently paused, so an active sizing-kit flow is not confirmed.
Price: New orders currently paused

2026-08-20: the official April 10 pause notice remains current and the product/store still show Evie Ring as sold out; recheck before showing purchase or sizing-kit guidance.

Official sources: Evie Ring store (opens in a new tab), Evie order-pause update (opens in a new tab)

Ultrahuman Ring AIR

last verified 2026-08-20 · next review2026-09-20

Size range: Sizes 5–14
Sizing kit: Free plastic sizing kit on order.
Price: ~$349

2026-08-20: official global store still lists $349, sizes 5–14 and a free kit; USITC order remains the controlling US-risk source. Recheck before every monetized update.

Official sources: Ultrahuman Ring AIR (opens in a new tab), USITC exclusion order (opens in a new tab)

Circular Ring 2

last verified 2026-07-10 · next review2026-10-10

Size range: Sizes 6–14
Sizing kit: App-camera sizing by default; an optional physical kit is about $5.
Price: ~$379 and up

Verify app-camera sizing and physical-kit price before using in buyer CTAs.

Official sources: Circular sizing guide (opens in a new tab), Circular sizing kit (opens in a new tab)

Oura Ring 4

last verified 2026-07-10 · next review2026-10-10

Size range: Sizes 4–15
Sizing kit: Use the Oura Ring 4 sizing kit; Size Later includes a complimentary kit, and many retailers sell kits with purchase credit.
Price: Check Oura

Review with every Oura generation launch or kit-policy change.

Official sources: Oura Ring 4 support (opens in a new tab), Oura sizing guide (opens in a new tab)

Oura Ring 5

last verified 2026-07-10 · next review2026-10-10

Size range: Sizes 6–13
Sizing kit: Use the Oura Ring 5 sizing kit; do not rely on Ring 4 kit results as a final order size.
Price: Check Oura

Ring 5 has generation-specific fit/range notes; do not reuse Ring 4 source assumptions.

Official sources: Oura Ring 5 support (opens in a new tab), Oura sizing guide (opens in a new tab)

RingConn Gen 2

last verified 2026-07-10 · next review2026-10-10

Size range: Sizes 6–14
Sizing kit: Free sizing kit, a 3D-print template, or borrow-and-measure.
Price: ~$299

Recheck published mm chart and kit guidance before affiliate activation.

Official sources: RingConn sizing guide (opens in a new tab)

Samsung Galaxy Ring

last verified 2026-07-10 · next review2026-10-10

Size range: Sizes 5–15
Sizing kit: Use the Galaxy Ring sizing kit before ordering; Samsung recommends wearing a sample for more than 24 hours.
Price: $399.99

Recheck when Samsung changes kit contents, ring size range or sensor-fit guidance.

Official sources: Samsung Galaxy Ring sizing support (opens in a new tab), Samsung Galaxy Ring product page (opens in a new tab)

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