baby sleep sacks

beautiful baby in MORI’s Clever Year Round Sleep Sack

baby sleep sacks

Our collection of baby sleep sacks and wearable blankets are thoughtfully crafted in our signature organic cotton and bamboo from viscose fabric to ensure your little one sleeps soundly at night and naptime.

Our organic baby sleep sacks are available in a range of colors and prints, as well as a number of different TOGs to suit every season and climate.

The TOG determines the thickness of the sleep sack, so the lower the rating, the cooler it is. For the warmer months, or whilst you’re on holiday, our 0.5 TOG summer sleep sacks will help your baby or toddler keep cool all night.

As the temperature drops and the chillier seasons draw in, keep them snug in a 2.5 TOG winter sleep sack. The versatile 1.5 TOG can be used throughout the year by changing the layers worn underneath.

Our bestselling Clever Sleep sack is innovatively designed to ensure little ones have a safe sleep. It features a double-directional zip for quick changes and a clever opening for a stroller so they can sleep undisturbed on the move. As your child grows, the sleep sack's length can be adjusted to fit from 8-9lbs (4kgs) up to 2 years.

Our newborn baby swaddle sack has been designed to replicate the natural cuddle of the womb so new arrivals feel comforted and safe when they sleep. All our sleep and swaddle sacks are made from high-quality fabric to be worn, washed and passed on again again.

Layer with our supersoft organic baby pjs and onesies.

Looking for the perfect present? Explore our carefully curated collections of baby gifts to find soft, cozy essentials they'll cherish.

Our collection of baby sleep sacks and wearable blankets are thoughtfully crafted in our signature organic cotton and bamboo from...

Sleep Sack FAQs

Why do I need a baby sleep sack?

Sleep sacks provide a familiar sleeping environment for your little one, so they associate being placed inside one with going to bed especially helpful on holidays or visiting other people’s houses. Because there’s no need for blankets, they reduce the likelihood of your baby waking up cold because they’ve kicked off the covers.

Are sleep sacks safe for babies?

The Lullaby Trust, a charity which promotes safer sleep for babies, lists a sleep sack as an essential product in their guide. A baby sleep sack is a safe option as they prevent a little one’s head from being covered, plus they’re available in a variety of TOGs so you can choose the right one for the season.

What TOG should my baby’s sleep sack be?

The TOG determines the thickness of the sleep sack, the higher the rating, the warmer it is. Our sleep sacks are available in 3 TOGs; 2.5 for winter, 1.5 which is suitable for year-round use in a temperate climate and 0.5 TOG which has no padding for summer & holidays.

What should my baby wear underneath a sleep sack?

Babies can’t regular their temperature well, so dressing them appropriately is very important to keep them safe and comfortable. All our sleeping bags are made from breathable, thermoregulating and moisture-wicking organic fabrics to keep babies at the ideal temperature all night.

Learn how to dress your baby safely in summer.

How many sleep sacks does my baby need?

We recommend investing in 2 sleep sacks for your baby or toddler, this means you can have one on the go whilst the other is in the wash. You can buy a summer & winter TOG, or 2 of our year-round 1.5 versions. We also sell a Multi TOG option which has removable inner padding to transform it from a 2.5 TOG to a 0.5. Learn more about our Multi TOG sleeping sack.

What makes a MORI sleep sack a good choice?

As well as being made from the softest, safest fabrics, our sleep sacks are designed with plenty of features to make bedtime simpler. We’ve added zip fastenings for quicker changes, adjustable lengths to fit newborns up to 2 years and stroller openings so they snooze on the move.