








Nothing in your ears, Built-in white noise, Auto-off sleep timer, Bluetooth to anything, USB-C rechargeable, 30-night trial
The bedtime standoff
Every fix you've tried comes with a catch.
You need something playing to quiet your brain. They need actual quiet. Until now, somebody had to lose.
Earbuds
Great until you roll onto your side. Then they dig in, fall out, and vanish into the sheets by 2am.
Sleep headbands
Hot, itchy, and halfway up your forehead by morning. Nobody has ever looked forward to wearing one.
Your phone speaker
Quiet enough for you is loud enough for them. Cue the sigh from the other side of the bed.
Nothing in your ears
Your ears weren't built to sleep in earbuds.
Undertone lies flat under your pillow and sends sound up through it, right where your head already rests. No buds to dig in. No band to slip. Just you, your pillow, and whatever gets you to sleep.
- Slim enough to forget it's there
- Comfortable for back, stomach, and side sleepers
- Built-in white noise and nature sounds
- Auto-off timer, so it isn't playing till sunrise
How it works
Thirty seconds to set up. Then just sleep.
Slide it under your pillow
Slim and light, it disappears under any pillow. Side sleepers included.
Play anything
Pair over Bluetooth for Spotify, podcasts, audiobooks, YouTube, or sleep apps. Or tap into the built-in sleep sounds.
Set the timer, drift off
It switches itself off once you're out. Recharge over USB-C whenever it needs it.
Undertone vs. the usual suspects
The only one without a catch.
| Undertone | Earbuds | Headband | Phone speaker | |
|---|---|---|---|---|
| Nothing in your ears | ✓ | — | ✓ | ✓ |
| Comfortable for side sleepers | ✓ | — | — | ✓ |
| Nothing on your head | ✓ | ✓ | — | ✓ |
| Sound stays on your side | ✓ | ✓ | ✓ | — |
| Auto-off sleep timer | ✓ | — | — | — |
Hotel nights, solved
Every pillow becomes your pillow.
Thin walls, rattling AC, a hallway that never sleeps. Toss Undertone in your bag and bring your own soundtrack, or your own white noise, wherever you're sleeping tonight.
- Slim enough for a carry-on or toiletry bag
- Built-in white noise, no Wi-Fi needed
- One USB-C cable for the whole trip
The holiday gift
For the one who falls asleep to YouTube.
Everybody knows one. The podcast-to-sleep person. The rain-sounds person. The just-one-more-episode person. Give them the gift they'll use every single night.
- Free shipping on every US order
- Buy 2, save 10%: one for them, one for you
- Buy 3, save 15%: stocking stuffers, sorted
Reviews
Early nights. Honest words.
Sleep on it for 30 nights.
Give Undertone a full month under your pillow. If it doesn't earn its spot, reach out and we'll make it right. No forms, no runaround.
Start your 30 nights →Questions
Questions, answered.
Will the person next to me hear it?
At normal bedtime volume, the sound stays with your pillow and they won't be bothered. Turn it way up and they may catch a faint murmur, so keep it low and let the pillow do the work.
Will I feel it under my pillow?
It's slim and light, made to lie flat under your pillow without a lump. Side sleepers included.
What can I play through it?
Anything from your phone, tablet, or laptop over Bluetooth: Spotify, podcasts, audiobooks, YouTube, sleep apps. White noise and nature sounds are built in, too.
How do I charge it?
With the included USB-C cable. The auto-off timer shuts it down after you fall asleep, so it isn't draining all night.
Can I mix colors in a bundle?
Yes. Add each color to your cart separately and bundle savings apply automatically: 10% off two, 15% off three or more.
How long does shipping take?
Orders are processed within 1–3 business days, and shipping is free on every US order. You'll get a tracking link by email the moment yours ships.
What if I don't love it?
You get 30 nights to decide. If Undertone doesn't earn its spot under your pillow, reach out and we'll make it right.