--- product_id: 745263890 title: "Ring 4 Sizing Kit - Size Before You Buy - Unique Sizing Classification for Smart Rings - Receive Credit for Purchase" price: "MX$811" currency: MXN in_stock: true reviews_count: 5 url: https://www.desertcart.mx/products/745263890-ring-4-sizing-kit-size-before-you-buy-unique-sizing store_origin: MX region: Mexico --- # Precision sizing for perfect fit Ultra-lightweight at 0.55g Made in USA quality assurance Ring 4 Sizing Kit - Size Before You Buy - Unique Sizing Classification for Smart Rings - Receive Credit for Purchase **Price:** MX$811 **Availability:** ✅ In Stock ## Summary > 📏 Nail your fit, own your wellness journey. ## Quick Answers - **What is this?** Ring 4 Sizing Kit - Size Before You Buy - Unique Sizing Classification for Smart Rings - Receive Credit for Purchase - **How much does it cost?** MX$811 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/745263890-ring-4-sizing-kit-size-before-you-buy-unique-sizing) ## 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 - • **Seamless Setup:** Try before you buy and sync effortlessly with the Oura App. - • **Risk-Free Sizing:** Unique sizing kit lets you find your ideal ring size before committing. - • **Light as a Feather:** At just 0.55g, experience all-day comfort without the bulk. - • **Perfect Fit, Perfect Data:** Ensure your Oura Ring 4 delivers peak accuracy with a custom fit. - • **Trusted Quality & Warranty:** Backed by a 2-year limited manufacturer warranty for peace of mind. ## Overview The Oura Ring 4 Sizing Kit offers a precision sizing experience to guarantee optimal comfort and data accuracy for your smart ring. Lightweight and made in the USA, this kit ensures you select the perfect size before purchase, supported by a 2-year warranty and seamless integration with the Oura App. ## Description Product Description 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. Step 2 Purchase your Oura Ring 4. 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 ₹599 per month. Oura Ring 4 Sizing Kit 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: Slecht. - Duurde lang voordat het aankwam en en geen 10 euro bon gekregen voor het kopen van de oura ring 4. Review: Oura Ring第4世代を購入には必要な品 - Oura Ring第3世代の電池持ちが悪くなってきたので、Oura Ring第4世代購入のためサイジングキットを購入した カラーはOura Ring第3世代と同じゴールド、第3世代は右人差指に着用してるので同じ指のOura Ring第4世代を購入予定です ## Features - Sizing Kit 4 - Size Before You Buy - Unique Sizing Classification for Smart Rings - A properly fitting Oura Ring 4 results in the highest possible data accuracy, comfort, and overall experience - WARRANTY: 2 year limited manufacturer warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DWFSW47F | | Best Sellers Rank | #108,135 in Electronics ( See Top 100 in Electronics ) #39 in Rings | | Colour | White | | Country of Origin | USA | | Customer Reviews | 4.4 4.4 out of 5 stars (848) | | Date First Available | 1 March 2025 | | GPS | No GPS | | Item Dimensions LxWxH | 14 x 14 x 2.5 Centimeters | | Item Weight | 0.55 g | | Item model number | JZ98-54867 | | Manufacturer | Oura | | Other display features | Wireless | | Product Dimensions | 14 x 14 x 2.5 cm; 0.55 g | | Whats in the box | Oura Ring 4 Sizing Kit | ## Images ![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/61RUDe87DIL.jpg) ## Customer Reviews ### ⭐ Slecht. *by A***K on 18 January 2026* Duurde lang voordat het aankwam en en geen 10 euro bon gekregen voor het kopen van de oura ring 4. ### ⭐⭐⭐⭐⭐ Oura Ring第4世代を購入には必要な品 *by ミ***ス on 4 March 2026* Oura Ring第3世代の電池持ちが悪くなってきたので、Oura Ring第4世代購入のためサイジングキットを購入した カラーはOura Ring第3世代と同じゴールド、第3世代は右人差指に着用してるので同じ指のOura Ring第4世代を購入予定です ### ⭐⭐⭐⭐⭐ I'ts Always Good To Try Before You Buy! *by C***R on 17 December 2025* ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.mx/products/745263890-ring-4-sizing-kit-size-before-you-buy-unique-sizing](https://www.desertcart.mx/products/745263890-ring-4-sizing-kit-size-before-you-buy-unique-sizing) --- *Product available on Desertcart Mexico* *Store origin: MX* *Last updated: 2026-04-23*