---
product_id: 724839096
title: "Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase"
brand: "oura"
price: "€ 32.22"
currency: EUR
in_stock: true
reviews_count: 8
category: "Oura"
url: https://www.desertcart.fr/products/724839096-oura-ring-4-size-kit-size-before-purchase-oura-ring
store_origin: FR
region: France
---

# Optimizes data accuracy Custom sizing precision Fits all fingers & hands Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase

**Brand:** oura
**Price:** € 32.22
**Availability:** ✅ In Stock

## Summary

> 📏 Nail your perfect fit before you buy—because precision is the new luxury.

## Quick Answers

- **What is this?** Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase by oura
- **How much does it cost?** € 32.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/724839096-oura-ring-4-size-kit-size-before-purchase-oura-ring)

## Best For

- oura enthusiasts

## Why This Product

- Trusted oura brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wear It Your Way:** Designed to fit any finger on either hand for ultimate comfort and versatility.
- • **Instant Credit Bonus:** Purchase the size kit and get 10 credits toward your Oura Ring 4 purchase—smart sizing pays off.
- • **Unlock Peak Accuracy:** A precise fit means your health data is sharper and more reliable than ever.
- • **Try Before You Commit:** Use the size kit for 24+ hours to ensure the ring feels like it was made just for you.
- • **Perfect Fit, Zero Guesswork:** Custom sizing tailored exclusively for Oura Ring 4—no more standard size confusion.

## Overview

The Oura Ring 4 Size Kit is an essential tool designed to help you find the perfect custom fit for the Oura Ring 4, which uses unique sizing different from standard US ring sizes. By ensuring a precise fit on your preferred finger, it maximizes comfort and the accuracy of health tracking features like heart rate, activity, and sleep monitoring. The kit also grants 10 credits toward your ring purchase, making sizing smarter and more rewarding.

## Description

With the Oura Ring 4 Size Kit, you and the people around you can find the ideal fit before purchasing. Once you purchase a sizing kit, you will automatically apply $10 credit to your Oura Ring 4 at checkout. The proper fit of the Oura Ring 4 ensures the best data accuracy, comfort, and overall experience possible. Oura Ring 4 sizes are slightly different from the standard ring size, so it is important to use our tool to adjust your size and follow the size instructions. The Oura Ring 4 works on every finger and can be worn on either hand. For optimum accuracy, we recommend wearing Oura Ring 4 on the forefinger, middle finger or ring finger

Review: 後で判明したがアマゾンとその他で1000円近く値段が違う。類似の商品にも出て来なかった。 ２４時間装着とあったので着けて寝たら、かぶれでしまった。本商品とは素材が違うが、高いので怖くて買えない
Review: この商品は詐欺のようなものです。絶対に購入しないでください！価格が高すぎるうえに、説明にあるようなdesertcartのクレジットも一切もらえません。リング購入時のクレジットを期待して買いましたが、何も得られませんでした。完全にお金の無駄です。日本ではビックカメラやヨドバシカメラで無料のリングサイズ測定サービスがありますので、そちらを利用した方が良いです。この商品にはお金を使わないでください。 This product is a scam — avoid it! It’s completely overpriced and does not give you desertcart credit as advertised. I bought it expecting to receive credit toward my ring purchase but was unable to. Total waste of money. You can just go to a store for free sizing — in Japan, Bic Camera and Yodobashi Camera both offer ring sizing services for free. Don’t waste your money on this product.

## Features

- OURA RING 4 SIZE KIT - Oura Ring 4 Size Kit is an ideal way to find the perfect size. This is a custom siser that allows you and the people around you to find the perfect fit before purchasing
- SIZE BEFORE PURCHASE - Oura Ring 4 sizes are different from the standard ring size. Determine your size with the Oura Ring 4 Size Kit. Refer to the "From Brand" section below for more information
- NOT STANDARD SIZE - Oura Ring 4 sizes are slightly different from the standard ring size, so it is important to use our Oura Ring 4 Size Kit to determine your size. Oura Ring 4 comes in sizes 4-15. Half Size
- COMFORT AND PRECISE - The proper fit Oura ring provides the best data accuracy, comfort and overall experience
- CHOOSE YOUR FINGER - Oura Ring 4 works on every finger and can be worn on either hand. For optimum accuracy, we recommend wearing Oura Ring 4 on the forefinger, middle finger or ring finger According to the specific size you plan to wear the Oura Ring 4
- HOW TO FIT - Oura Ring 4 fits securely and comfortably at the base of your finger. Ring should not rotate when performing normal daily tasks. We recommend wearing a ring siser for at least 24 hours to ensure the best fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WVWXR1 |
| Amazon Bestseller | #89,690 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #252 in Standard Penis Rings |
| Color | white |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,328) |
| Date First Available | October 15, 2024 |
| Item Weight | 50 g |
| Item model number | JZ98-54870 |
| Other display features | Wireless |
| Package Dimensions | 16.7 x 11.3 x 1.2 cm; 50 g |
| Special features | Heart Rate Monitor, Activity Tracker, Sleep Monitor |
| Whats in the box | Oura Ring 4 Size Kit |

## Product Details

- **Brand:** OURA
- **Color:** white
- **Included Components:** Oura Ring 4 Size Kit

## Images

![Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase - Image 1](https://m.media-amazon.com/images/I/31KesvMYMuL.jpg)
![Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase - Image 2](https://m.media-amazon.com/images/I/41-mOQ2GwBL.jpg)
![Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase - Image 3](https://m.media-amazon.com/images/I/416UVBKEzTL.jpg)
![Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase - Image 4](https://m.media-amazon.com/images/I/41hdX3lyA2L.jpg)
![Oura Ring 4 Size Kit - Size Before Purchase Oura Ring 4 - Unique Size - Receive Credit for Purchase - Image 5](https://m.media-amazon.com/images/I/518Qh+G3I5L.jpg)

## Customer Reviews

### ⭐⭐ Review
*by A***ー on September 9, 2025*

後で判明したがアマゾンとその他で1000円近く値段が違う。類似の商品にも出て来なかった。 ２４時間装着とあったので着けて寝たら、かぶれでしまった。本商品とは素材が違うが、高いので怖くて買えない

### ⭐ Review
*by B***R on October 29, 2025*

この商品は詐欺のようなものです。絶対に購入しないでください！価格が高すぎるうえに、説明にあるようなAmazonのクレジットも一切もらえません。リング購入時のクレジットを期待して買いましたが、何も得られませんでした。完全にお金の無駄です。日本ではビックカメラやヨドバシカメラで無料のリングサイズ測定サービスがありますので、そちらを利用した方が良いです。この商品にはお金を使わないでください。 This product is a scam — avoid it! It’s completely overpriced and does not give you Amazon credit as advertised. I bought it expecting to receive credit toward my ring purchase but was unable to. Total waste of money. You can just go to a store for free sizing — in Japan, Bic Camera and Yodobashi Camera both offer ring sizing services for free. Don’t waste your money on this product.

### ⭐ Review
*by ご***郎 on March 30, 2025*

サイズキットに1〜2万円？（2025年3月30日） ふざけるな 笑

## Frequently Bought Together

- Oura Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase
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- RingConn Gen 2 Air Sizing Kit - Size First Before You Buy - Choose from 9 Sizes - Sizes 6 to 14 - Only Smart Ring

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-23*