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OPTIM Ring Sizing Kit
Choose your OPTIM Ring size with confidence before confirming your final ring, its free.
The OPTIM Ring Sizing Kit includes multiple sample sizes that allow you to test the fit at home during normal day-and-night wear. This helps you select a size that feels secure, comfortable and suitable for consistent use.
Why use the OPTIM Ring Sizing Kit?
Test before choosing: Compare multiple sizes rather than estimating your fit.
Wear samples at home: Try your preferred size throughout your normal daily routine.
Check overnight comfort: Make sure the fit remains comfortable while sleeping.
Reduce sizing mistakes: Confirm your size before receiving your final OPTIM Ring.
Find a secure fit: Choose a size that stays correctly positioned without feeling uncomfortably tight.
How to select your size
Try the sample sizes on the finger where you plan to wear your OPTIM Ring. The ideal fit should feel secure during movement while remaining comfortable throughout the day and night.
Because finger size can change slightly during different activities and times of day, wear your preferred sample for an extended period before confirming your final size.
The Sizing Kit contains non-functional sample rings and does not track wellness data. Your final OPTIM Ring is supplied separately according to the applicable ordering process.
- Sleep Insights
- Menstrual Cycle
- Stress Monitoring
- Heart Health
- Fitness + Movement
Sleep Score
Wake up with real insights, not just a feeling. Your Optim Sleep Score is calculated using total sleep time, HRV, nighttime movement, sleep consistency, and more—helping you understand and improve your rest every night.
Sleep Stages
Get a detailed breakdown of your sleep quality. Track your deep sleep, REM sleep, and light sleep to understand your nightly recovery and wake up feeling your best.
Blood Oxygen and more...
Optim Ring tracks your blood oxygen levels while you sleep, helping detect potential breathing disturbances so you can optimize your nightly recovery. And many more sleep markers, shown in app.
Automatically track your cycle
Optims period tracking makes cycle care smart and simple. It uses your body signals like temperature and sleep to predict your period and ovulation. The more you wear it, the smarter it gets. Log your symptoms, track moods, and get a clear picture about your menstrual cycle.
Real-time Stress insights
Gain insight into what stresses you and what helps you recover. With Optim Ring, track how daily activities impact your stress levels and discover the best ways to recharge faster.
Trends
Monitor how well your body recovers from day-to-day physiological stress and learn how to build resilience to stress over time.
24'7 Heart Rate monitoring
Track your heart rate around the clock and see how it responds to your lifestyle. Gain insights into how habits, meals, stress, and environment impact your overall well-being.
HRV capability
Optim Ring analyzes your HRV to give insights into stress, recovery, and overall wellness—helping you know when to push forward or prioritize rest.
V02 Max
Measure how efficiently your body uses oxygen during intense activity, helping you track fitness levels and optimize performance.
Automatic Activity Detection
From swimming to house tasks, the Optim Ring automatically detects over 40 activities and tracks your heart rate, so you get credit for every movement throughout the day.
Steps, Cals, Distance.
Auto detect calories burnt, steps taken and distance covered throughout the day.
