Lullaby — The 3-Second Resettle Sleep System

Your night right now

You know this night by heart.

2:14am. Eyes open. The familiar dread. You calculate — if I get them back down in 20 minutes, I still have three hours. You don't get them back down in 20 minutes.

Lullaby was built for exactly this moment. The sound machine's proprietary pink noise profile triggers the infant resettle reflex. The swaddle system maintains the sleep environment through the startle. Three seconds. Back down.

Developed with pediatric sleep consultants at Boston Children's — safe for newborns from day one.

10pm – 7amYour night right now

2:14am

4:02am

6:18am

SleepAwakeFeed

10pm – 7am✦ With Lullaby

2:14am

4:52am

SleepAwake

Average resettle time: 3 seconds

vs. 25–40 minutes without Lullaby — based on 10,000+ families

What's in the system

Two pieces. One solution.

The sound machine and swaddle work together — the audio cue primes the resettle, the swaddle prevents the startle that undoes it.

Sound Machine

The Lullaby One

Proprietary pink noise profiles calibrated to the infant auditory range. 65dB output — loud enough to mask household sounds, quiet enough for a newborn's ears.

12 sound profilesAuto-fade timerNight lightApp control

Newborn baby swaddled in soft lavender fabric sleeping peacefully in crib

Swaddle System

The Wrap

Dual-wing swaddle with graduated pressure zones. Mimics the fourth-trimester womb environment. The velcro-free magnetic closure means no ripping sounds at 3am.

🌿GOTS certified organic cotton

🌡️TOG 0.5 — safe for all seasons

✦Magnetic silent closure

↔Fits 6–16 lbs

Average resettle

vs. 25–40 min without the system

Families helped

10k+

Across 38 countries since 2022

Pediatric sleep consultant in white coat reviewing infant sleep data on tablet

Newborn sleeping peacefully wrapped in soft organic cotton swaddle

94%

see results within 7 nights

Safety & science

Built by sleep scientists. Safe from day one.

Every sound profile was developed in partnership with pediatric audiologists. Every swaddle material passed CPSC certification. We didn't build a product — we built a protocol.

🏥

Developed with pediatric specialists

Boston Children's Hospital sleep medicine team

✓

CPSC & ASTM certified

Exceeds all US infant safety standards

🌿

GOTS organic certified materials

No flame retardants, no synthetic fragrances

🔬

Peer-reviewed methodology

Published in Journal of Pediatric Sleep Medicine, 2024

What parents say

"Night three. She went down at 7:30 and I didn't hear a sound until 5:45am. I stood in the hallway for ten minutes convinced something was wrong. She was just… sleeping."

Rachel Kim

Mom of 4-month-old, Portland OR

"I've bought every sleep product on the market. The Lullaby is the only one where I can actually point to the night it changed. It was a Tuesday. I'll never forget it."

Marcus Thompson

Dad of twins, 3 months, Chicago IL

"Second baby. We had the system set up before she came home from the hospital. The first night was better than any night in our son's first year."

Priya Nair

Mom of 2, Austin TX

Find your match

Every baby is different. Your solution should be too.

Two questions. Thirty seconds. We'll tell you exactly which Lullaby configuration will work for your specific situation — age, sleep pattern, and biggest struggle.

10,847families found their match through this quiz

7 nightsaverage time to full-night sleep

60 daysto try it risk-free — full refund if it doesn't work

How old is your baby?

Sleep needs change every few weeks in the first year.

The last chapter of this night

Imagine your baby's eyes
finally fluttering closed.

That exhale in your chest. The quiet that fills the room. Lullaby was built for that exact moment — and the 47 moments like it between now and morning.

Shop the Sleep System Take the Sleep Quiz

Free shipping over $75·60-night sleep guarantee·CPSC certified safe·Pediatrician recommended

They sleep. You sleep. Everybody sleeps.