Sleep Sack

1 product

Most relevant
Featured
Most relevant
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old
Availability
Reset
Price
$0.00 ‒ $54.90
Reset
Clear all
Filter and sort
Close

Filter and sort

1 product

Availability
Price

$0.00 ‒ $54.90

1 product
  • Premium Bamboo Sleep Sack-1.0 TOG
    Regular price
    $54.90
    Sale price
    $54.90
    Regular price
    $54.90

A sleep sack is one of the most practical investments you can make for your baby's sleep routine — and Alppi Baby's Premium Bamboo Sleep Sack is built to earn its place in your nightly ritual. Made with ultra-soft bamboo viscose and a thoughtful 1.0 TOG rating, it keeps your baby comfortably cozy, safely wrapped, and sleeping longer without the risks that come with loose blankets.

Sleep Sack for Deeper, Safer Nights

Most sleep disruptions come down to temperature, discomfort, and the hassle of nighttime diaper changes. The Alppi Baby sleep sack solves all three — combining premium bamboo softness, breathable temperature regulation, and a two-way NightZip™ System that makes 3AM changes fast, quiet, and nearly effortless.

  • Ultra-soft bamboo viscose that feels cool and soothing against delicate skin
  • 1.0 TOG lightweight design keeps babies cozy without overheating
  • Two-way NightZip™ System for silent, one-hand diaper changes at night
  • Zipper Guard protects baby's chin and face from zip contact
  • AAP Safe-Sleep Ready — replaces loose blankets for a safer crib environment
Also from Alppi Baby

Building out your full sleep and care routine? Our Wispy Cloud Diaper Monthly Box delivers clean, skin-safe diapers on a schedule so you are always stocked for the night ahead.

Bamboo Baby Sleep Sack for the Most Sensitive Skin

Conventional sleep sacks are made with synthetic materials that trap heat, cause friction, and trigger reactions in babies with sensitive skin or eczema. Our CloudSoft™ bamboo shell is naturally breathable, temperature-regulating, and gentle enough for the most delicate skin — certified Standard 100 by OEKO-TEX® so you know exactly what is touching your baby.

  • CloudSoft™ bamboo shell stays cool, soft, and gentle all night
  • Breathable fiber naturally regulates temperature through every season
  • Standard 100 by OEKO-TEX® certified — tested for harmful substances
  • Free from harsh chemical finishes that irritate sensitive skin
  • Trusted by parents of babies with eczema and reactive skin

Wearable Blanket Built for Nightly Kicks and Weekly Washes

A sleep sack takes a beating — nightly wear, frequent washing, and the relentless energy of babies who treat bedtime like a workout. Alppi Baby's StayStrong™ stitching reinforces every seam so the sleep sack holds its shape, its softness, and its performance wash after wash.

  • StayStrong™ reinforced stitching built for everyday durability
  • Holds shape and softness through repeated washing
  • Smooth, snag-resistant zippers that stay quiet and functional
  • Zipper Guard keeps hardware away from baby's delicate skin
  • Designed to move with your baby without restricting natural sleep positions
Complete the Routine

Stock up on gentle wipes to complete your nighttime routine. Our Wispy Duo Wipes are ultra-soft, skin-safe, and perfect for quiet middle-of-the-night changes.

The Right Sleep Sack Size for Every Stage of Growth

Getting the fit right matters as much as the fabric. Alppi Baby sleep sacks are available in three sizes to grow with your baby from newborn through toddlerhood — snug enough to feel secure without restricting movement or natural sleep positioning.

S
7–15 lbs / 0–6 Months
M
16–26 lbs / 6–18 Months
L
27–37 lbs / 18–36 Months
  • Size S fits 7–15 lbs / 3–7 kg, ideal for 0–6 months
  • Size M fits 16–26 lbs / 7–12 kg, ideal for 6–18 months
  • Size L fits 27–37 lbs / 12–17 kg, ideal for 18–36 months
  • Generous sizing allows natural movement without excess fabric
  • Refer to the Alppi Baby Sizing Guide to find the right fit for your baby
As Your Baby Grows

Pair the sleep sack with our Alppi Training Pants Monthly Box as your baby grows into toddlerhood — the same clean, gentle standards across every stage.


Frequently Asked Questions: Sleep Sack

What is the point of a sleep sack?

A sleep sack keeps your baby warm and comfortable through the night without the safety risks that come with loose blankets in the crib. Loose bedding is a leading suffocation hazard for infants, and a wearable blanket like the Alppi Baby sleep sack eliminates that risk entirely while still keeping your baby cozy. Beyond safety, a consistent sleep sack routine can also become a reliable sleep cue that signals to your baby that it is time to wind down and rest.

Does a baby need a sleep sack at night?

While a sleep sack is not a strict requirement, pediatric sleep experts and the American Academy of Pediatrics strongly recommend removing all loose blankets from a baby's sleep environment — making a sleep sack the practical, safe alternative for keeping babies warm at night. The Alppi Baby sleep sack is particularly helpful for parents because the NightZip™ two-way zipper allows for diaper changes without fully waking or undressing your baby. For families navigating sensitive skin, the bamboo construction also means your baby stays comfortable without overheating or developing irritation overnight.

Do doctors recommend sleep sacks?

Yes — the American Academy of Pediatrics recommends wearable blankets and sleep sacks as a safe alternative to loose bedding in infant sleep environments. The Alppi Baby sleep sack is designed with AAP Safe-Sleep guidelines in mind, replacing loose blankets with a secure, fitted wearable that keeps babies warm without creating suffocation hazards. Its breathable bamboo construction also supports safe temperature regulation, reducing the risk of overheating — another key concern highlighted in safe sleep guidelines.

Which is better, a sleep sack or a swaddle?

Swaddles are typically best for newborns in the earliest weeks of life when the startle reflex is strongest and babies benefit from the snug, womb-like feeling of being wrapped. Once a baby begins showing signs of rolling — which can happen as early as 2 months — swaddling becomes a safety risk and a sleep sack becomes the recommended alternative. The Alppi Baby sleep sack starting at size S covers babies from 7 pounds, making it a natural next step after the swaddle stage and a versatile option that carries through toddlerhood.