Oura Ring 4 Sizing Kit — Size Before You Buy, Credit at Checkout | OURA

Find Your Perfect Fit Before You Buy

The Oura Ring 4 Sizing Kit is designed to help you measure accurately and explore fit options with ease. The kit includes a custom sizer you can use yourself or share with friends and family, so you can approach checkout with greater confidence that your ring will sit comfortably on the finger you choose.

What’s Inside and How It Works

Oura Ring 4 sizes differ from standard ring sizes and there are no half sizes, making precise sizing important. The kit guides you to select from sizes 4 through 15 and to wear the ring on the finger you plan to use most. One key perk is that a sizing kit purchase automatically adds a 10 credit at checkout for the Oura Ring 4, giving you a practical incentive as you finalize your decision.

• Custom sizer to measure your finger accurately
• Clear, step-by-step sizing instructions
• Guidance on which finger to wear for optimal comfort and data capture
• Works with all fingers and both hands

• Wearing the ring on index, middle, or ring finger may support comfortable wear
• Accurate sizing may contribute to steadier readings during daily activities
• No half sizes; sizes range from 4 to 15
• Share the kit with others to find multiple fits quickly

After sizing, you can proceed to checkout with increased confidence that your Oura Ring 4 will feel secure and comfortable during wear, sleep tracking, and daily use. The process emphasizes ease and clarity, rather than guesswork.

Why You Might Use the Kit

The kit addresses common sizing uncertainties and helps you compare fits before committing to a purchase. By sizing beforehand, you may experience a smoother transition from purchase to daily wear, especially if you plan to wear the ring across different activities and times of day.