Sleep Intelligence · Titanium · Free VIGIL App
VIGIL Ring by CLARIA — Sleep & Cortisol Tracker
A titanium smart ring that reads your cortisol pattern while you sleep — feeding nightly data into the free VIGIL app to build your personal sleep intelligence score.
Ring Size — select a size
Free UK delivery · Ships in 2–3 working days
Material
Aerospace titanium · Midnight finish
Battery
7-day battery life
Water Resistance
5ATM · shower & swim safe
Tracks
Sleep stages · HRV · SpO₂ · Skin temp
Builds your personal Cortisol Pattern Score overnight
Free VIGIL app — no subscription, no locked features
Not a fitness tracker — built specifically for sleep and recovery
Designed for women 35–55 experiencing wired-tired nights
The Science
What the ring is actually measuring
01
Sleep Stages
Light, deep, REM and wake cycles mapped across the night. The VIGIL app shows you where your sleep is breaking down — not just how long you were in bed.
02
HRV & Cortisol Pattern
Heart rate variability is the most accurate passive proxy for overnight cortisol. The ring reads it continuously and feeds the data into your Cortisol Pattern Score.
03
Skin Temperature
Nightly temperature variation correlates with hormonal shifts — particularly relevant for women in perimenopause. The VIGIL app tracks this trend week over week.
Try it for 30 nights.
Or your money back.
If the VIGIL Ring does not give you clearer insight into your sleep within 30 nights of consistent wear, return it for a full refund. No forms. No questions. No return postage required.
Add to Cart — Free UK Delivery