---
product_id: 661191227
title: "Oura Ring 4 Sizing Kit - Smart Ring Accessory - Before You Buy - Unique Sizing, Not Standard US Sizes - Receive Credit for Purchase - Compatible with Oura App, Android & iOS"
brand: "oura"
price: "2783 kr"
currency: ISK
in_stock: true
category: "Oura"
url: https://www.desertcart.is/products/661191227-oura-ring-4-sizing-kit-smart-ring-accessory-before-you
store_origin: IS
region: Iceland
---

# Test wear for 24+ hours Instant $10 credit on purchase Custom Oura-specific sizing Oura Ring 4 Sizing Kit - Smart Ring Accessory - Before You Buy - Unique Sizing, Not Standard US Sizes - Receive Credit for Purchase - Compatible with Oura App, Android & iOS

**Brand:** oura
**Price:** 2783 kr
**Availability:** ✅ In Stock

## Summary

> 📏 Find your perfect fit before you commit — because guessing isn’t an option.

## Quick Answers

- **What is this?** Oura Ring 4 Sizing Kit - Smart Ring Accessory - Before You Buy - Unique Sizing, Not Standard US Sizes - Receive Credit for Purchase - Compatible with Oura App, Android & iOS by oura
- **How much does it cost?** 2783 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/661191227-oura-ring-4-sizing-kit-smart-ring-accessory-before-you)

## 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

- • **Skip the Wait:** Determine your perfect size immediately and fast-track your Oura Ring order without delays.
- • **Instant Savings:** Get a $10 credit applied automatically toward your Oura Ring 4 purchase when you buy the sizing kit.
- • **Wear-Tested Comfort:** Try on the sizer for 24+ hours to ensure all-day comfort and accuracy under real-life conditions.
- • **Precision Fit, No Guesswork:** Avoid costly sizing mistakes with Oura’s unique sizing kit tailored for Ring 4.
- • **Universal Finger Compatibility:** Fits all fingers and both hands, with recommendations for optimal accuracy on index, middle, or ring finger.

## Overview

The Oura Ring 4 Sizing Kit is a precision 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, users can ensure optimal comfort and data accuracy. The kit works on any finger and includes a $10 credit toward the purchase of the actual ring, making it a smart, time-saving step to avoid sizing errors and delays.

## 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.

## Features

- 173

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WVWXR1 |
| Additional Features | Heart Rate Monitor, Activity Tracker, Sleep Monitor |
| Band Material Type | Stainless Steel |
| Best Sellers Rank | #61 in Electronics ( See Top 100 in Electronics ) #1 in Smart Rings |
| Brand | OURA |
| Built-In Media | Oura Ring 4 Sizing Kit |
| Closure Type | Push Back |
| Color | Sizing Kit |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Customer Reviews | 4.5 out of 5 stars 3,815 Reviews |
| Display Type | No Display |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate, Sleep Duration |
| Model Number | JZ98-54870 |
| Shape | Round |
| Special Feature | Heart Rate Monitor, Activity Tracker, Sleep Monitor |
| Style | Sizing Kit |
| Style Name | Sizing Kit |
| Supported Application | Fitness Tracker, Sleep Monitor |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |

## Product Details

- **Band Material Type:** Stainless Steel
- **Brand:** OURA
- **Color:** Sizing Kit
- **Compatible Devices:** Smartphone
- **Display Type:** No Display
- **GPS:** No GPS
- **Shape:** Round
- **Special Feature:** Heart Rate Monitor, Activity Tracker, Sleep Monitor
- **Style:** Sizing Kit
- **Water Resistance Level:** Water Resistant

## Images

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

## Available Options

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

## 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.is/products/661191227-oura-ring-4-sizing-kit-smart-ring-accessory-before-you](https://www.desertcart.is/products/661191227-oura-ring-4-sizing-kit-smart-ring-accessory-before-you)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-07-10*