---
product_id: 661191227
title: "Oura Ring 4 Sizing Kit - Size Before You Buy The Oura Ring 4 - Unique Sizing, Not Standard US Ring Sizes - Receive Credit for Purchase"
brand: "oura"
price: "$U981"
currency: UYU
in_stock: true
reviews_count: 13
category: "Oura"
url: https://www.desertcart.uy/products/661191227-oura-ring-4-sizing-kit-size-before-you-buy-oura
store_origin: UY
region: Uruguay
---

# Optimizes Oura Ring data accuracy Precision sizing kit Credit applied on purchase Oura Ring 4 Sizing Kit - Size Before You Buy The Oura Ring 4 - Unique Sizing, Not Standard US Ring Sizes - Receive Credit for Purchase

**Brand:** oura
**Price:** $U981
**Availability:** ✅ In Stock

## Summary

> 📏 Nail your perfect fit before you ring in the future!

## Quick Answers

- **What is this?** Oura Ring 4 Sizing Kit - Size Before You Buy The Oura Ring 4 - Unique Sizing, Not Standard US Ring Sizes - Receive Credit for Purchase by oura
- **How much does it cost?** $U981 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/661191227-oura-ring-4-sizing-kit-size-before-you-buy-oura)

## 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

- • **Try Before You Commit:** Sizing kit doubles as a wearable tester, so you can experience the feel before investing in your smart ring.
- • **Wear It Like You Mean It:** Test your ring on your preferred finger for 24+ hours to ensure comfort and stability during all daily activities.
- • **Data Accuracy Starts Here:** A snug, secure fit guarantees the highest fidelity in your health and sleep tracking metrics.
- • **Perfect Fit, Zero Guesswork:** Custom sizing tailored exclusively for Oura Ring 4’s unique dimensions—no more standard size confusion.
- • **Instant Savings, Instant Style:** Receive a $10 credit toward your Oura Ring 4 purchase when you order the sizing kit—smart sizing meets smart spending.

## Overview

The Oura Ring 4 Sizing Kit is an essential tool designed to help you find the exact fit for the Oura Ring 4, which uses unique sizing different from standard rings. By wearing the sizing kit for at least 24 hours on your chosen finger, you ensure maximum comfort and data accuracy. Plus, purchasing the kit grants a $10 credit toward your Oura Ring 4, making it a smart, risk-free step before committing to this cutting-edge health tracker.

## 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: Perfect fit - This was absolutely perfect to help me determine my ring size before buying the oura ring. The fit of the tester band was the exact same size as the oura ring. I loved that I was able to wear it for a day and try it out before buying the actual ring. I found this kit very helpful in finding the most comfortable size
Review: It does exactly what it says it does - It does exactly what it says it does. The rings are comfortable to wear and made it easy to figure out the right size before ordering the actual Oura Ring. I also appreciated being able to wear it for a full day to see how it felt during normal activities and while sleeping. Simple, accurate, and definitely worth using to avoid sizing issues

## 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 | #402 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #2 in Ring Sizers |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,749) |
| Date First Available | October 3, 2024 |
| Item Weight | 1.76 ounces |
| Item model number | JZ98-54870 |
| Manufacturer | Oura |
| Package Dimensions | 6.57 x 4.45 x 0.47 inches |

## Product Details

- **Brand:** OURA
- **Color:** Sizing Kit
- **Included Components:** Oura Ring 4 Sizing Kit
- **Manufacturer:** Oura

## Images

![Oura Ring 4 Sizing Kit - Size Before You Buy The Oura Ring 4 - Unique Sizing, Not Standard US Ring Sizes - Receive Credit for Purchase - Image 1](https://m.media-amazon.com/images/I/518Qh+G3I5L.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect fit
*by S***H on February 13, 2026*

This was absolutely perfect to help me determine my ring size before buying the oura ring. The fit of the tester band was the exact same size as the oura ring. I loved that I was able to wear it for a day and try it out before buying the actual ring. I found this kit very helpful in finding the most comfortable size

### ⭐⭐⭐⭐⭐ It does exactly what it says it does
*by D***A on February 3, 2026*

It does exactly what it says it does. The rings are comfortable to wear and made it easy to figure out the right size before ordering the actual Oura Ring. I also appreciated being able to wear it for a full day to see how it felt during normal activities and while sleeping. Simple, accurate, and definitely worth using to avoid sizing issues

### ⭐⭐⭐⭐⭐ Absolutely Essential Before Buying Your Oura Ring
*by N***E on February 14, 2026*

This sizing kit is hands down the best thing to purchase before ordering an Oura Ring. The sizing runs differently than regular jewelry, so trying the sample rings first made a huge difference in choosing the perfect fit. I loved being able to wear a size for a full day to see how it felt during normal activities, sleeping, and slight finger swelling. It gave me confidence that I was ordering the correct size and avoided the hassle of returns or exchanges. If you’re even slightly unsure about sizing, get this first. It’s a small step that saves time, stress, and money in the long run. Highly recommend! ⭐⭐⭐⭐⭐

## 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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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-07*