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📏 Nail your perfect fit before you buy—because precision is the new luxury.
The Oura Ring Gen3 Size Kit is an essential tool designed to help you find the exact ring size for optimal comfort and data accuracy. Unlike standard rings, Oura Ring sizes range from 6 to 13 with no half sizes, making this custom sizing kit crucial. It fits any finger on either hand and should be worn for at least 24 hours to ensure a secure, non-rotating fit. Plus, purchasing the kit grants you a $10 credit toward your future Oura Ring Gen3 purchase, making it a smart, risk-free step toward owning the cutting-edge wellness ring.












| ASIN | B0CYWC18G8 |
| Amazon Bestseller | #223,674 in Electronics ( See Top 100 in Electronics ) #132,108 in Cell Phone Accessories |
| Color | white |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,031) |
| Date First Available | June 7, 2024 |
| Item Weight | 100 g |
| Item model number | JZ98-54794 |
| Other display features | Wireless |
| Package Dimensions | 14.71 x 14.3 x 2.59 cm; 100 g |
| Whats in the box | Oura Ring Size Kit |
K**様
OURAリングを中古で購入することを検討していたため購入。新品だが、箱の状態がよくないものが多少安くなっていたので選んだ。 これがなくては指の太さがわからないため適切なサイズで注文するのは難しい。 中古などの最安値で購入して確認すればよいと思う。 長期間着用するようなものでもないのでおそらくほぼ汚れていない。 現在(令和7年7月)の4世代とは規格が違うし、そちらは一応公式サイトで無料でのサイジングキットが謳われているので新品で買うならそちらを見るべきだと思う。
S**S
Size kit worked great. The sizes were true to what was needed to be ordered
M**O
Compré el kit aunque aún no compro el anillo porque vi que tal vez pronto sale el GEN 4
S**N
It's a ring sizing kit so it's exactly what you expect it would be.....
C**T
Did not like the ring on finger for long period even though I wear a ring
A**R
The sizing kit has 2 x size 7 rings. The size 6 ring is actually a size 7. The kit is useless to me as I need to compare sizes 6 and 7. The box was sealed, so I believe it wasn’t tampered with and it’s a quality check issue. Now I have to reorder another kit, and hope for the best that i won’t have the same issue again.
Trustpilot
2 months ago
2 weeks ago