{"product_id":"oura-ring-4-sizing-kit-2026190794","title":"Oura Ring 4 Sizing Kit","description":"\u003cp\u003eThe Oura Ring 4 Sizing Kit allows you to find the ideal fit before purchasing. Oura Ring sizes are slightly different from standard ring sizes, so it is important to size yourself using our sizing tools. A properly fitting Oura Ring will result in the highest possible data accuracy, comfort, and overall experience.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot standard sizing: Oura Ring 4 sizes are slightly different from standard ring sizes, and the ring is available in sizes 4-15 with no half sizes.\u003c\/li\u003e\n\u003cli\u003eComfort and accuracy: A properly fitting ring ensures optimal data accuracy and comfort.\u003c\/li\u003e\n\u003cli\u003eChoose a finger: Oura Ring works on all fingers; for best accuracy, wear on index, middle, or ring finger.\u003c\/li\u003e\n\u003cli\u003eHow it should fit: The ring should fit securely at the base of the finger without rotating during daily tasks. Wear the sizer for at least 24 hours to confirm your best fit.\u003c\/li\u003e\n\u003cli\u003eCompatible with: Android and iOS\u003c\/li\u003e\n\u003cli\u003eAccessories included: Oura Sizing Rings in sizes 4-15\u003c\/li\u003e\n\u003cli\u003eCountry of origin: Estonia\u003c\/li\u003e\n\u003cli\u003ePlease note: this sizing kit is only compatible with Oura Ring 4.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"John Lewis","offers":[{"title":"Default Title","offer_id":48322305163502,"sku":"STO-ITEM-2026-190794","price":8.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0522\/0125\/9183\/files\/112562953.webp?v=1784129323","url":"https:\/\/mcgrocer.com\/products\/oura-ring-4-sizing-kit-2026190794","provider":"McGrocer","version":"1.0","type":"link"}