Prices across 1 retailer
updated dailyCheapest first, using today's offer price where one is running.
Some retailer links are affiliate links — we may earn a commission at no extra cost to you.
Price history
Best price so far: £10.00 at Boots on 28 Aug 2026
About this product
Product details Receive a 10 Boots credit to use towards Oura ring 4 with purchase of a sizing kit. Unlock increased accuracy from your health metrics and enjoy comfortable use. The Oura Ring 4 sizing kit helps you get your sizing spot on for the Oura Ring 4. It allows you to try on multiple sizes, wear for up to 24 hours and find the perfect finger for your everyday use. Since the Oura Ring 4 is designed for all-day, everyday use, you want to ensure youre getting one that fits perfectly and does its job on your finger without getting in the way. Enter the Oura 4 Ring sizing kit. Oura Ring sizes are just that bit different from normal ring sizes. And since a properly fitting Oura is key to accurate results, the Oura Ring 4 sizing kit is the perfect complement and proof of Ouras commitment to ensuring you get the best experience out of the Oura Ring 4. Not compatible with Oura Ring Gen3.