---
product_id: 705628063
title: "Oura Ring 4 Sizing Kit - Size Before You Buy - Unique Sizing Classification for Smart Rings - Receive Credit for Purchase"
price: "€ 14.78"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/705628063-oura-ring-4-sizing-kit-size-before-you-buy-unique
store_origin: FI
region: Finland
---

# £10 credit reward Precision sizing kit Smart biometric fit Oura Ring 4 Sizing Kit - Size Before You Buy - Unique Sizing Classification for Smart Rings - Receive Credit for Purchase

**Price:** € 14.78
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Oura Ring 4 Sizing Kit - Size Before You Buy - Unique Sizing Classification for Smart Rings - Receive Credit for Purchase
- **How much does it cost?** € 14.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/705628063-oura-ring-4-sizing-kit-size-before-you-buy-unique)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wear It Your Way:** Fits any finger on either hand—choose your ideal finger for personalized health insights.
- • **Earn While You Size:** Get £10 credit towards your Oura Ring 4 purchase—try before you buy and save instantly.
- • **Perfect Fit, Every Time:** Custom sizing kit ensures your Oura Ring 4 fits flawlessly for maximum comfort and data accuracy.
- • **Smart Sizing for Smart Tech:** Optimized for Oura Ring 4’s advanced biometric sensors, ensuring your ring tracks 30+ health metrics accurately.
- • **No Guesswork, Just Confidence:** Avoid sizing mistakes and experience the full power of Oura’s smart sensing technology from day one.

## Overview

The Oura Ring 4 Sizing Kit is a precision tool designed to help you find the perfect ring size before purchase, ensuring optimal comfort and accurate biometric tracking. With a £10 credit towards your Oura Ring 4 purchase, this kit eliminates sizing guesswork and maximizes your wearable’s health insights.

## Description

From the manufacturer Find the right fit Oura Ring 4 sizes are different than standard sizes. The Oura Ring 4 Sizing Kit is the best way to ensure a comfortable and accurate experience. Step 1 Purchase an Oura Ring 4 Sizing Kit and receive a £10 credit towards your Oura Ring. Step 2 Advanced health monitoring capabilities, including heart rate, sleep patterns, and activity tracking. Step 3 Slip on your Oura Ring 4 and download the Oura App. Step 4 New members get the first month of Oura Membership free, then it’s £5.99 per month. Oura Ring Size before you buy Easy to wear, everywhere No interruptions Built to last More accurate. More personal. The Oura Ring 4 Sizing Kit is the best way to ensure an accurate experience. Sleek and comfortable, Oura Ring seamlessly fits into your life from a workout to a night out. Stay present without notifications on your wrist. Check the Oura App when you want to. Oura Ring 4 is fully titanium: one of the strongest metals on earth. Durable, lightweight, and water resistant. Oura Ring 4 delivers incredibly accurate data and personalised health insights to help you be at your best. A really smart gift. The Oura Ring 4 Sizing Kit makes the perfect gift for your loved ones who want an Oura Ring 4 but you may not know their Oura Ring 4 size.

Review: I'ts Always Good To Try Before You Buy! - Nice to use at your leisure and get used to, get the best comfy fit as the ring is wider than a normal ring. Good ring sizer all round, I got it on sale so good value for money.
Review: Nice kit - Very nice ring sizing kit and the price came off the ring with no problems

## 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
- RECEIVE £10 CREDIT - With a sizing kit purchase, receive a £10 desertcart credit towards the future purchase of an Oura Ring 4. Sizing kit is not returnable (terms and conditions apply)
- ACCURACY - SMART SENSING - Oura tracks over 30 biometrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DWFSW47F |
| Best Sellers Rank | 130 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Wearable Tech Rings |
| Colour | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (848) |
| Date First Available | 1 Mar. 2025 |
| GPS | No GPS |
| Item Weight | 0.55 g |
| Item model number | JZ98-54867 |
| Other display features | Wireless |
| Product Dimensions | 14 x 14 x 2.5 cm; 0.55 g |
| What’s in the box | Oura Ring 4 Sizing Kit |

## Images

![Oura Ring 4 Sizing Kit - Size Before You Buy - Unique Sizing Classification for Smart Rings - Receive Credit for Purchase - Image 1](https://m.media-amazon.com/images/I/61NL606+M8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ I'ts Always Good To Try Before You Buy!
*by C***R on 17 December 2025*

Nice to use at your leisure and get used to, get the best comfy fit as the ring is wider than a normal ring. Good ring sizer all round, I got it on sale so good value for money.

### ⭐⭐⭐⭐⭐ Nice kit
*by D***D on 29 December 2025*

Very nice ring sizing kit and the price came off the ring with no problems

### ⭐⭐⭐⭐ Does as says on the tin
*by D***W on 2 February 2026*

As says on the tin - great for two people wanting to get oura rings saved us a trip to the store. A little extortionate on the value for money for a simple ring sizer pack however i guess saves money on purchasing the wrong size which would be worse. Great for identifying comfort level and ease of use for potentially purchasing (which I opted out of post this purchase)

## 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 for Heritage and Horizon Rings-Measure Sizes 6-13 for Fit Before Purchasing, Sizes are Unique to Oura

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**Shop now:** [https://www.desertcart.fi/products/705628063-oura-ring-4-sizing-kit-size-before-you-buy-unique](https://www.desertcart.fi/products/705628063-oura-ring-4-sizing-kit-size-before-you-buy-unique)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-01*