---
product_id: 717690620
title: "Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase"
brand: "oura"
price: "S$23"
currency: SGD
in_stock: true
reviews_count: 7
category: "Oura"
url: https://www.desertcart.sg/products/717690620-ring-4-sizing-kit-size-before-you-buy-oura-ring
store_origin: SG
region: Singapore
---

# Optimizes Oura Ring 4 data accuracy Instant $10 credit on purchase Custom sizing precision Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase

**Brand:** oura
**Price:** S$23
**Availability:** ✅ In Stock

## Summary

> 📏 Size smart, wear smarter — don’t miss out on your perfect Oura fit!

## Quick Answers

- **What is this?** Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase by oura
- **How much does it cost?** S$23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/717690620-ring-4-sizing-kit-size-before-you-buy-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:** Fits all fingers on either hand, with recommended fingers for peak sensor accuracy.
- • **Test It Like a Pro:** Wear the sizer for 24+ hours to confirm your perfect fit before committing.
- • **Save While You Size:** Receive an automatic $10 credit toward your Oura Ring 4 purchase when you buy the sizing kit.
- • **Comfort Meets Precision:** Ensures your ring fits snugly without rotation, maximizing comfort and data reliability.
- • **Perfect Fit, Every Time:** Custom sizing kit tailored exclusively for Oura Ring 4’s unique sizes—no guesswork, no returns.

## Overview

The Oura Ring 4 Sizing Kit is a must-have tool designed to help you find the exact fit for your Oura Ring 4, which uses unique sizing different from standard rings. By ensuring a precise fit, it maximizes comfort and the accuracy of your health data. Plus, purchasing the kit grants you a $10 credit toward your ring, making sizing risk-free and seamless.

## Description

The Oura Ring 4 Sizing Kit allows for you and those around you to find the ideal fit before purchasing. With a sizing kit purchase, a 10 credit will automatically be applied to your Oura Ring 4 at checkout. A properly fitting Oura Ring 4 will result in the highest possible data accuracy, comfort, and overall experience. Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our tools and to follow our sizing instructions. Oura Ring 4 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 4 on your index, middle, or ring finger.

Review: Good - Good
Review: good - it is what it is

## Features

- OURA RING 4 SIZING KIT - The Oura Ring 4 Sizing Kit is the ideal way to find the perfect size. It’s a custom sizer that allows for you, and those around you, to find the perfect fit before purchasing
- SIZE BEFORE YOU BUY - Oura Ring 4 sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit. For additional details, see “From the brand” section below
- NOT STANDARD SIZING - Oura Ring 4 sizes are slightly different from standard ring sizes, so it is important to size yourself using our Oura Ring 4 Sizing Kit. Oura Ring 4 is available in sizes 4-15. There are no half sizes
- COMFORT AND ACCURACY - A properly fitting Oura Ring will result in the highest data accuracy, comfort, and overall experience
- CHOOSE A FINGER - Oura Ring 4 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 4 on your index, middle, or ring finger. Size the exact finger you plan to wear your Oura Ring 4 on
- HOW IT SHOULD FIT - Oura Ring 4 should fit securely and comfortably at the base of your finger. Your ring should not rotate as you go about normal daily tasks. We recommend wearing your ring sizer for at least 24 hours to confirm your best fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WVWXR1 |
| Best Sellers Rank | #9,374 in Fashion ( See Top 100 in Fashion ) #16 in Ring Sizers |
| Item model number | JZ98-54870 |
| Manufacturer | Oura |
| Package Dimensions | 16.7 x 11.3 x 1.2 cm; 50 g |

## Product Details

- **Brand:** OURA
- **Colour:** Sizing Kit
- **Included components:** Oura Ring 4 Sizing Kit

## Images

![Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase - Image 1](https://m.media-amazon.com/images/I/518Qh+G3I5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by S***R on 2 July 2025*

Good

### ⭐⭐⭐⭐⭐ good
*by T***R on 25 January 2025*

it is what it is

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

## Frequently Bought Together

- Oura Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase
- Oura Ring Gen3 Sizing Kit - Size Before You Buy The Oura Ring Gen3 - Unique Sizing - Receive Credit for Purchase
- 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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**Shop now:** [https://www.desertcart.sg/products/717690620-ring-4-sizing-kit-size-before-you-buy-oura-ring](https://www.desertcart.sg/products/717690620-ring-4-sizing-kit-size-before-you-buy-oura-ring)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-22*