Know what happened overnight. Without wearing anything.

A thin sensor hides under the bedsheet and tracks sleep stages, heart rate, breathing rhythm and movement. Real answers every morning, with 100% privacy and zero hardware on your body.

No wearables No cameras No microphones No charging No subscription ($0 forever)
Order For Your Mattress - $199 $189See How It Hides Under the Sheet
30-Nights TrialFree DeliveryWorks On All Mattresses
Bedroom with a Charleston Mattress and OZI Sleep tracker under the sheet
Charleston Mattress × OZI Sleep

Know what happened overnight. Without wearing anything.

A thin sensor hides under the bedsheet and tracks sleep, heart rate, and breathing for everyone in the home. Real answers every morning.

The 5 Promises That Set OZI Sleep Apart

Every other sleep gadget introduces annoyance: charging docks, wearable bulk, monthly subscriptions, or privacy fears. Here is why Charleston Mattress owners love the OZI approach.

01

No Wearables

Zero Friction
Nothing on your wrist, fingers, or forehead

Throw away the sweaty silicone bands and tight smart rings. Your sleep on a Charleston Mattress remains comfortable. You fall asleep naturally on fine linens with zero hardware touching your body.

No skin irritation, no dead ring batteries in the middle of the night, no rubber straps disrupting blood flow.
02

No Cameras

100% Optical Privacy
Your bedroom is your private sanctuary

Unlike smart monitors that place optical lenses in bedrooms, OZI uses zero cameras. Your bedroom intimacy and dignity are sacred.

No video feeds, no cloud lenses, no security breach risks in your master or children’s bedrooms.
03

No Microphones

Zero Audio Listening
No smart listening devices or wiretaps

OZI never records audio or analyzes spoken sound. Movement and micro-vibrations from your heart pulse and lung expansion are measured purely through mechanical piezoelectric dynamics.

Complete peace of mind. Private conversations stay private, 24/7/365.
04

No Charging

Always Ready
Never forget a charging puck again

Plug it in discreetly under the bed once and forget it. OZI is always on, ready the exact second you lie down on your mattress.

Never lose sleep data because you forgot to charge a watch or left a ring dock on the bathroom counter.
05

No Subscription

$0 Monthly Fees
You own your tracker. You own your data.

Competitors charge $15 to $30 every month just to view your own sleep scores. With OZI, app access, updates, and multi-user metrics are included for life with zero recurring charges.

Save $360 to $720+ over 2 years compared to Whoop, Oura, or Eight Sleep recurring subscriptions.

Traditional Trackers vs. The Charleston Mattress + OZI Way

Why pay $300 for a wearable and an additional $240 every year in subscriptions just to sleep in discomfort?

Wearables & RingsTight, itchy, daily charging & lost docks
Monthly Subscriptions$500+ locked behind recurring paywalls
OZI Under-Sheet$0 sub forever + zero friction

The whole household. One app.

Open it in the morning. Everything is already there.

FAMILIES

Explain the rough mornings

See how restful each night was and when sleep broke, then adjust routines.

CAREGIVERS

Check in without walking in

Know who is in bed without opening the door. Get bed-exit and heart rate alerts.

CARE TEAMS

Start with real context

Share sleep trends with family, clinicians, or care staff in a tap.

Household view
Family Dashboard

Household view

Everyone in the home on one screen.

See who is asleep and who is awake, plus each person’s sleep score from last night, without opening a bedroom door.

  • Status for every bed at a glance
  • Last night’s sleep score for each person
  • Live heart rate for kids’ rooms
Sleep Score & Stages
Daily Score & Summary

Sleep Score & Stages

One clear 0-100 score every morning.

Total time asleep, bedtime, wake time, and a full breakdown of Awake, REM, Light, and Deep sleep.

  • Daily sleep score
  • Time asleep, bedtime and wake time
  • Awake, REM, Light and Deep breakdown
  • Heart rate and sleep efficiency
Household trends
Weekly & Monthly Trends

Household trends

Compare the week/month across the family.

Weekly and monthly charts compare sleep quality for everyone in the home, with each person’s average score.

  • Group average sleep score
  • Week and month views
  • Each person’s average score
Live vitals
Heart Rate & Breathing

Live vitals

Check in live, from any room.

See live heart rate and breathing rate for any bed in the home, with nothing worn on the body.

  • Live heart rate (bpm)
  • Breathing rate
  • Nothing to wear, nothing to charge
Smart Alarm
Timed-Wake up

Smart Alarm

Wake up refreshed every morning

Wake you up during the light-phase of your sleep cycle for a perfect morning every day.

  • Wake up window
  • Smooth alarm
  • Wake up sharp every morning

Why Charleston Mattress owners choose OZI over wearables.

Compare OZI’s contact-free under-sheet design against wearable smart rings, watches, and fitness straps.

Feature / Capability OZI Sleep (Under-Sheet)Oura Ring 4WhoopApple Watch
Wearable Requirement None (Sleep on bare sheet)Titanium Ring worn 24/7Tight strap worn 24/7Watch on wrist every night
Monthly Subscription $0 / Month (Lifetime Included)$5.99 / Month ($72/yr)$239 - $399 / Year mandatory$0 (but requires $400+ watch)
Charging Frequency Never (Continuous wall power)Every 4-6 days (special dock)Every 4-5 days (slide-on battery)Daily (before bedtime)
Bedroom Privacy 100% Camera & Mic-FreeNo camera/micNo camera/micMicrophone & sensors on wrist
Household Dashboard Yes, all beds on one screenSingle user onlySingle user onlySingle user only
Bed-Exit / Caregiver Alerts Yes (Real-time awareness)No (retrospective only)No (retrospective only)Limited / manual emergency only
2-Year Total Cost of Ownership $199 total$443+ ($299 + $144 sub)$538+ (Subscription recurring)$429+ (Hardware)

Save Over $400 in Subscription Fees Over 2 Years

You never pay a recurring monthly fee. Buy your OZI tracker once, own your health data for life.

$0 Monthly Fees Guaranteed
Exclusive Partner Pricing

Order Your OZI Sleep Tracker

Reserved exclusively for The Charleston Mattress customers. Includes 30-Night In-Home Trial, complimentary shipping, and lifetime app access with zero monthly fees.

Order Summary

Selected: Dual Bed / Couple Pack (2 × OZI Sleep Tracker)

$349.00Total due today
Partner code CHARLESTON10 saves you $10 per tracker. It is applied automatically at checkout.
Shipping:FREE Priority Delivery
App Access:$0 / Lifetime Access
Trial Period:30-Night Risk-Free In-Home Trial

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30-Night Money-Back GuaranteeSecure Shopify CheckoutFast US Shipping

Frequently Asked Questions

Everything you need to know about setting up OZI on your Charleston Mattress.

Can I feel the sensor when I sleep?

No. The OZI sensor is ultra-thin (less than 2 millimeters thick), constructed from a flexible, soft-touch fabric mat. When placed between your Charleston Mattress quilted top and your fitted bedsheet, it is virtually imperceptible to the human body. You enjoy the pure plush feel of your Charleston Mattress without any lump or hardness.

How does it work with two people sleeping on a Queen or King mattress?

For couples, we recommend the Dual Bed / Couple Pack (2 trackers). Each sensor sits on either side of the bed (left and right sleeper zones). OZI’s advanced spatial filtering algorithms isolate each partner’s heartbeat, breathing, and movements so one partner rolling over does not skew the other partner’s vitals or sleep score.

Does OZI work with flippable or thick Charleston Mattresses?

Yes! OZI rests directly on TOP of the mattress surface, underneath your fitted sheet. Therefore, whether your Charleston Mattress is 10.5", 13", or 15" thick, or whether you flip your Cooper mattress every season, OZI performs with 100% precision. It works through mattress protectors and toppers up to 4 inches thick as well.

Are there any cameras, microphones, or audio recordings?

Absolutely none. OZI contains ZERO optical cameras and ZERO audio microphones. It operates purely on passive ballistocardiography (measuring tiny physical force waves generated by each heartbeat and breath). Your bedroom privacy is unconditionally protected.

Are there any monthly subscription fees?

Never. Unlike Whoop ($239/year), Oura ($72/year), or Eight Sleep ($180+/year), OZI is a one-time purchase. Lifetime mobile app access for iOS and Android, all future feature updates, and multi-user household mode are 100% included with $0 subscription fees forever.

What is the in-home trial and warranty policy for Charleston Mattress customers?

Every order through this Charleston Mattress partner page comes with an exclusive 30-Night In-Home Risk-Free Trial. If you do not love your OZI tracker, return it for a full refund with free return shipping. It also includes an extended 2-Year Hardware Replacement Warranty.

How is OZI powered? Do I need to recharge batteries?

OZI connects to a standard wall outlet via a discreet, low-voltage power adapter with an extra-long cord that tucks beneath your bed frame. Because it is continuously powered, you never have to remember to recharge batteries, swap pods, or worry about missing a night of sleep data.

Have questions before ordering?

Our team is here to help. Email us anytime at connect@ozisleep.com