Sleeping soundly on her side with the Dusk trainer on her forehead
FYROST Dusk side-sleep trainer — 9-gram position-sensing disc with adhesive stickers and coin battery
Matte-white dome, one button, one tiny LED — the whole interface
Dusk side profile — slim, smooth, 9 grams
Coin-small: Dusk held between two fingers
Everything in the box — trainer, adhesive strips, CR2032 battery, quick-start guide
Dusk on the nightstand as the light goes down
Pressing Dusk onto the chest before bed — forehead works too
1 / 8
★★★★★★★★★★4.61,059 reviewsSide-Sleep Trainer · The Night Line

FYROST Dusk™

Trains you off your back — without waking you.

$129.90$239.80Save 45%
  • Senses a roll onto your back — answers with a gentle vibration that escalates softly until you turn onto your side
  • 20-minute grace period — fall asleep in any position you like; Dusk starts watching once you're under
  • 9 g on a coin battery — no app, no pairing, no charging; about 30 nights per CR2032, auto-off after 8 hours
  • Worn on the forehead or chest with skin-safe adhesive strips · nothing in your mouth, nothing on your jaw

Pack: Duo

The sticker roll and a CR2032 coin battery come in the box, about a month of nights. No app, no charging, no subscription. Ships free, and you have 60 nights to decide.

Free shipping · delivered in 5–10 business days.

✓ Free Shipping✓ 60-Day Guarantee✓ 1-Year Warranty
How to use it — step by step→

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What happens when you roll onto your back.

Position sensing · gentle vibration prompts
20 min
Grace period to fall asleep first
9 g
You forget it's even on
30
Nights per coin battery

Dusk senses your sleeping position and prompts with gentle vibration. It is a sleep-habit training device, not a medical device — it does not diagnose, monitor or treat any condition.

The back-sleep problem

Most snoring starts the moment you roll onto your back.

Strips, sprays and mouthguards never touch that. On your back, gravity pulls your tongue and soft palate toward the airway — which is exactly why the elbow in the ribs and the 3 AM “turn over!” work instantly. Dusk simply automates the elbow, and does it kindly: a coin-sized sensor notices the roll and answers with a gentle vibration that escalates until you're back on your side. No jaw hardware, no tape over your mouth, no machine on the nightstand — and the person next to you finally stays asleep too.

One disc · Six jobs

Built to make side-sleeping the default.

01
The Nudge, Not An Alarm
Vibration starts feather-soft and firms up only if you ignore it — a prompt to turn, not a wake-up call.
02
Your Partner Sleeps Too
Completely silent. The only person who feels anything is the one who rolled onto their back.
03
Fall Asleep Your Way
Press the button and drift off in any position — Dusk waits 20 minutes before it starts watching.
04
Nothing In Your Mouth
No mouthguards, no chin straps, no tape. A 9-gram disc on your forehead or chest.
05
A Habit, Not A Crutch
Positional training is designed to stick — many owners find themselves turning over before the buzz by week three or four.
06
Zero Maintenance
Coin battery, about 30 nights, auto-off after 8 hours. No app, no charger, no pairing screen.
How to use

On in under a minute. Then never think about it.

No app, no pairing, no charging. Four steps the first night — Dusk takes it from there.

Step 01

Stick it on

Press a fresh adhesive strip onto the disc, then onto a clean, dry forehead — or the centre of your chest.

Step 02

Switch it on

Hold the button three seconds until the light blinks. Fall asleep any way you like — Dusk waits 20 minutes before it watches.

Step 03

It catches the roll

Settle onto your back and Dusk feels it, answering with a few soft pulses — a gentle cue to turn onto your side.

Step 04

It does the rest

Dusk powers down on its own after 8 hours. One coin battery lasts about a month, and blinks when it's time for a fresh one.

Why Dusk

The gentle fix — without the $499 prescription device.

FYROST DuskRx positional trainersAnti-snore mouthpiecesChin straps
Price$79.90$499 + prescription$100+$15
Targets the real trigger — back-sleepingYes — trains you off your backYesNo — jaw, not positionNo — jaw, not position
Nothing in your mouthYesYesNo — worn between your teethYes — but it straps your jaw shut
Comfortable enough to forget9-gram discNeck-worn strap deviceSore-jaw mornings are commonMost give up within a week
Prescription requiredNoYes (US)NoNo
Lets you fall asleep your way20-minute grace period———
Warranty1 year1 year90 days—
1,059 reviews

The elbow, retired.

★★★★★

“My wife has elbowed me awake for fifteen years. Third night with this thing I woke up on my side with no memory of turning over. She noticed before I did.”

Mark R. · Verified Buyer
★★★★★

“Bought it for my husband after the snoring nearly got its own bedroom. The buzz doesn't wake him — he just rolls over mid-snore and goes quiet. Genuinely eerie the first time you watch it happen.”

Sandra K. · Verified Buyer
★★★★★

“I fall asleep on my back reading, and that was always the trap. The 20-minute delay means I can doze off however I like and it still catches me when I flip later. Week four: I'm turning over before it even buzzes.”

Devon P. · Verified Buyer
Good to know

Questions, answered.

How does it know I'm on my back?

A position sensor inside the disc reads your orientation all night. Twenty minutes after you press the button — a grace period designed so you can fall asleep in any position — it starts responding: roll onto your back and a gentle vibration begins, escalating softly until you turn onto your side.

Will the vibration wake me up — or my partner?

It's designed to prompt a turn, not sound an alarm. The buzz starts feather-soft and only firms up if you ignore it; most sleepers simply roll over and stay under. And it's completely silent — your partner hears nothing, which is rather the point.

Is this a sleep apnea device?

No. Dusk is a wellness training device for back-sleeping snorers — it is not a medical device and does not diagnose, monitor or treat sleep apnea or any other condition. If you suspect sleep apnea, please talk to your doctor.

Who is Dusk designed for?

Adults 18 and over whose snoring shows up mainly on their back — the position Dusk is built to train you out of. It isn't designed for people who snore on their side, and if you have significant neck or shoulder issues, check with your doctor first. Keep it off broken or irritated skin, and out of reach of children.

Forehead or chest — which is better?

Both work; it's personal preference. The forehead reads position very cleanly; the centre of the chest is more discreet and suits people who find anything on their face annoying. Try both — your sticker roll covers plenty of experiments.

What about the battery and the stickers?

One CR2032 coin battery — the kind in a car key — runs about 30 nights, because Dusk switches itself off after 8 hours and its low-battery light warns you before it quits. A roll of skin-safe, latex- and drug-free double-sided adhesive strips is included, and replacement rolls are inexpensive and easy to find.

How long until side-sleeping sticks?

Positional training is a habit play: the nudge does the work at first, and your body gradually learns to prefer your side. Many owners report turning over before the buzz by week three or four — keep Dusk in the drawer for relapse weeks after that.

How long does shipping take?

Shipping is free. Orders are processed within 1–2 business days and delivered in 5–10 business days with tracking emailed the moment your Dusk leaves the warehouse.

What if it's not for me?

Sleep on it for sixty nights. If you're not waking up on your side, send it back for a full refund — no restocking fees. Every Dusk carries a 1-year warranty.

60NIGHTS

The FYROST promise

Try it 60 nights. Love it, or your money back. Sleep on it for sixty nights — through the work weeks, the hotel beds, the heavy dinners. If you're not waking up on your side, and the person next to you isn't sleeping through the night again, email us for a full refund. No restocking fees, no awkward questions.

Freetracked shipping
1-Yearwarranty included
Secureencrypted checkout
Realhuman support

Everything you need — in one box.

Dusk Side-Sleep Trainer9 g · 3-axis sensor · vibration motor
Adhesive Sticker RollSkin-safe · latex & drug-free
CR2032 Coin BatteryAbout 30 nights of training
Quick-Start GuideThe 60-second setup
Choosing Duo? Two complete kits. Most couples end up wanting one each — and the second one doubles as the travel kit when only one of you is away.
FYROST Cirrus side-sleep contour pillow, three-quarter view
Pairs with

Somewhere comfortable to land.

Dusk moves you off your back. What decides whether you stay off it is usually the pillow — a flat one lets your neck fold and you drift back within the hour. Cirrus is contoured to hold the side position, so the nudge has somewhere to put you.

Cirrus — from $69.90 See the pillow →
Dusk on the nightstand as the light goes down

Turn over a new night.

The next snore doesn't get a vote. Join 1,000+ sleepers who trained themselves off their back.

Free shipping · 60-day guarantee · 1-year warranty
FYROST Dusk™ · Duo
$129.90$239.80

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Customer Reviews

Overall rating: 4.6 / 5 from 1059 reviews.

Customer photo review of FYROST Dusk — Side-Sleep Trainer

Box came with everything — the disc, a whole roll of stickers, battery already in and a little guide. Was set up before my tea went cold

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

so small honestly. lighter than the coin battery that runs it. wore it night one and my wife said the snoring stopped after the first buzz

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

Lives on the nightstand now with the rest of my life lol. Works great, just wish it came with a little tray or pouch so it doesnt wander

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

I wear it on my chest like this, under the shirt you cant even see it. Buzz is gentle, I roll over half asleep and thats that

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

Sticker roll is generous and they peel clean off the sheet in the morning. No sticky residue on skin either which surprised me

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

Battery is the same one as my car key so I had spares in the drawer already. A month in and still on the first one. Auto shutoff must really work

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

Went straight in the wash bag for our Portugal trip. Hotel walls are thin, nobody complained. Only wish the white didnt show scuffs from the bag zipper

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

forehead placement felt silly for exactly one night. then you stop noticing it exists. my gf says its the best thing ive ever bought and she means it

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

Sits on his book pile every evening now, part of the routine like reading glasses. Quietest spring we have had in 31 years of marriage

FYROST Dusk — Side-Sleep Trainer

Customer photo review of FYROST Dusk — Side-Sleep Trainer

Got the duo — one each because it turns out we BOTH snore on our backs. House is silent now. Highly recommend the two pack for couples

FYROST Dusk — Side-Sleep Trainer

I've been using the device but am not sure it's actually "training" me to sleep on my side...will continue to use it. I'm also curious as to what to use when the adhesive stickers run it as it looks like its only a few weeks supply?

FYROST Dusk — Side-Sleep Trainer

cannot read the tiny writing in the directions thus not opened how do i go about returning it? thanks for asking! please write bacl

FYROST Dusk — Side-Sleep Trainer

I'm a stomach-back rotator and it caught every single back roll the first night. The sticker roll they include lasts a good while — I get several nights per sticker.

FYROST Dusk — Side-Sleep Trainer

Our newborn sleeps in our room, so a silent fix mattered. This is silent to everyone but him. 10/10, the guest room is a guest room again.

FYROST Dusk — Side-Sleep Trainer

Better than the chin strap, the nose things, the sprays, the tape. Believe me, I own them all. Paired mine with the Duo so there's a permanent one in my dopp kit. Cannot recommend enough for back snorers.

FYROST Dusk — Side-Sleep Trainer

Very happy overall, though sweaty nights loosen the sticker a bit. I wear it on the sternum under a t-shirt, completely invisible and my partner feels nothing.

FYROST Dusk — Side-Sleep Trainer

By week three I was rolling over before it even buzzed. It actually trains you. I tested it lying awake — buzz kicks in shortly after you settle on your back. Clever little thing. Ordered a second for my brother.

FYROST Dusk — Side-Sleep Trainer

my Fitbit sleep score went from garbage to respectable in two weeks. Paired mine with the Duo so there's a permanent one in my dopp kit.

FYROST Dusk — Side-Sleep Trainer

Really effective, just wish it shipped with two sticker rolls. No app to sync, no account to make, no firmware. Bless. Recommend with the small caveats above.

FYROST Dusk — Side-Sleep Trainer

Deep sleepers doubt the buzz will work. I'm a log. It works. Shipping took about a week and everything arrived well packed. Ordered a second for my brother.

FYROST Dusk — Side-Sleep Trainer

I bought the Duo — one for me, one lives in my travel bag. The buzz starts gentle and only ramps up if you ignore it. Most nights the first nudge does it. Best sleep purchase Ive made.

FYROST Dusk — Side-Sleep Trainer

Bought it for my boyfriend as a semi-joke. Nobody is laughing now, we're sleeping. Setup is one button. My 68-year-old father managed it without calling me, which is a first.

FYROST Dusk — Side-Sleep Trainer

My wife noticed the difference before I did. My skin is sensitive and the stickers haven't caused any redness. Cannot recommend enough for back snorers

FYROST Dusk — Side-Sleep Trainer

It survived our camping trip and my brother-in-law ordered one from inside the tent. I wear it on the sternum under a t-shirt, completely invisible and my partner feels nothing. Genuinely life improving.

FYROST Dusk — Side-Sleep Trainer

First gadget I've bought that my spouse thanks ME for. It's silent to everyone else in the bed, which is the entire point. The 60-night guarantee made trying it easy — keeping it forever.

FYROST Dusk — Side-Sleep Trainer

Fell off in the night twice in the first week. When it stays on it works, but that's the problem. Customer service was genuinely nice about it

FYROST Dusk — Side-Sleep Trainer

Works exactly as described. Roll on back, gentle buzz, roll on side, silence. Setup is one button. My 68-year-old father managed it without calling me, which is a first. Best sleep purchase I've made.

FYROST Dusk — Side-Sleep Trainer

Good product. The first two nights it woke me a little when it buzzed, then my body learned. Good value at this price.

FYROST Dusk — Side-Sleep Trainer

Better than the chin strap, the nose things, the sprays, the tape. Believe me, I own them all. Battery is the kind from a car key fob and it's lasted a month so far.

FYROST Dusk — Side-Sleep Trainer

my snoring app used to record 3 hours of noise a night. Last week's average: 14 minutes. You can feel it's well made — the button has a proper click and the shell doesn't creak.

FYROST Dusk — Side-Sleep Trainer

Took about a week to trust it, now I won't sleep without it. Customer service answered my sticker question within a day. The 60-night guarantee made trying it easy — keeping it forever.

FYROST Dusk — Side-Sleep Trainer

Bought it for my boyfriend as a semi-joke. Nobody is laughing now, we're sleeping. No app to sync, no account to make, no firmware. Bless.

FYROST Dusk — Side-Sleep Trainer

Wife said it's the best anniversary gift I've ever gotten her. It was for ME. The 60-night guarantee made trying it easy — keeping it forever

FYROST Dusk — Side-Sleep Trainer

I forgot I was wearing it by night two. 9 grams is truly nothing. Cannot recommend enough for back snorers.

FYROST Dusk — Side-Sleep Trainer

As the person who DOESN'T snore, this is the best purchase my husband ever made. The sticker roll they include lasts a good while — I get several nights per sticker.

FYROST Dusk — Side-Sleep Trainer