beautiful baby in MORI’s Clever Year Round Sleeping Bag

Newborn & Baby Sleeping Bags - 0.5 – 2.5 TOG

Discover our collection of baby sleeping bags UK families trust, and toddler sleeping bags designed to help little ones sleep safely and comfortably through every season. From lightweight 0.5 TOG baby sleeping bags for warmer nights to cosy 2.5 TOG styles for winter, our award-winning collection is thoughtfully designed for every age and stage. Whether you need cosy sleep bags, newborn sizes for their first nights at home, or a larger toddler sleeping bag, explore our clever safety features and signature organic cotton and bamboo fabrics to support better sleep.

Choosing the Best Baby Sleeping Bag TOG for Every Season
Finding the right baby sleeping bag TOG can feel overwhelming for new parents, especially as room temperatures change throughout the year. Babies are less able to regulate their body temperature independently, which is why choosing the correct TOG rating can help keep little ones comfortable and prevent overheating during sleep.When choosing a newborn sleeping bag, TOG ratings are key. A lightweight 0.5 tog newborn sleeping bag is designed for warmer rooms above 24°C. For milder temperatures, a newborn sleeping bag 1 tog or a baby sleeping bag 1 TOG offers breathable comfort, alongside our 1.5 tog baby sleeping bag options.......

Choosing the Best Baby Sleeping Bag TOG for Every Season

Finding the right baby sleeping bag TOG can feel overwhelming for new parents, especially as room temperatures change throughout the year. Babies are less able to regulate their body temperature independently, which is why choosing the correct TOG rating can help keep little ones comfortable and prevent overheating during sleep.

When choosing a newborn sleeping bag, TOG ratings are key. A lightweight 0.5 tog newborn sleeping bag is designed for warmer rooms above 24°C. For milder temperatures, a newborn sleeping bag 1 tog or a baby sleeping bag 1 TOG offers breathable comfort, alongside our 1.5 tog baby sleeping bag options. For colder winter nights, a baby sleeping bag 2.5 TOG provides extra warmth.

For younger babies transitioning from swaddles, a 2.5 TOG swaddle bag can help maintain the secure feeling many newborns find comforting while still allowing healthy movement during sleep.

Why Baby Sleeping Bags Are Recommended for Safer Sleep

Baby sleeping bags have become a trusted sleep essential for many families because they offer a safer alternative to loose blankets in the cot. The Lullaby Trust - a renowned charity which promotes safer sleep for babies - recommends baby sleeping bags as part of a safer sleep setup, helping reduce the risk of blankets covering a baby’s face overnight.

Our collection includes thoughtful safety-first details designed to help parents feel more confident at bedtime. Features such as fitted neck openings, secure fastenings and adjustable armholes help little ones stay safely positioned through the night, while a baby sleeping bag with front opening zip allows for easier overnight changes with less disruption to sleep. Carefully placed zip guards also help protect your little one’s delicate skin.

For wriggly sleepers who kick off blankets, a front opening baby sleeping bag or sleep bag with arms can also help maintain a more consistent temperature overnight, reducing wake-ups caused by feeling too hot or too cold.

Breathable Fabrics to Help Babies Sleep More Comfortably

Heavy fabrics and too many layers can quickly lead to overheating, particularly during warmer nights or when babies are unwell.

Our sleep bags for newborns and babies are crafted from MORI’s signature bamboo and organic cotton fabric blend, chosen for its breathable, moisture-wicking and temperature-regulating properties. The fabric helps air circulate more easily around delicate skin while remaining exceptionally soft for babies prone to heat rash, eczema or irritation.

Pair a lightweight baby sleeping bag with breathable baby sleepsuits or summer pyjamas to help little ones stay cool and settled overnight. For colder evenings, layering with the appropriate TOG helps create a comfortable sleep environment without relying on loose bedding.

Baby & Toddler Sleeping Bags for Every Age and Stage

As little ones grow, their sleep routines and comfort needs naturally change too, which is why our collection includes baby sleeping bags designed to support every age and stage - from newborn through to toddler years. Whether you’re preparing for your baby’s first nights at home or moving your growing toddler into a larger sleep bag, finding the right size can help little ones sleep more comfortably and safely overnight.

For newborns and younger babies, discover our 0-3 month sleeping bag, sleeping bags 0-6 months and 3-6 month sleeping bag styles designed with plenty of room for natural movement and healthy hip development. As babies become more active, our 6-9 month sleeping bag and baby sleeping bags 6-12 months options—including the popular sleeping bag 6-12 months fit—provide comfortable space for wriggling.

To help you find the perfect fit as they grow, our sizing covers every stage:

12 to 18 Months: Transition smoothly with a 12 18 months sleep bag
18 to 24 Months: Choose a baby sleeping bag 18-24 months, an 18-24 month sleeping bag, or a dedicated sleeping bag 18 months for active toddlers
2 to 3 Years: Discover a sleeping bag for 2 year olds or baby sleeping bags 2-3 years, ensuring familiar comfort
24 to 36 Months: Our sleeping bag 24 36 months and baby sleeping bags 24-36 months offer plenty of legroom

3 Years +: We also offer larger baby sleeping bags 18-36 months and sleeping bags 3-4 years options for older children moving through new sleep routines

Sleeping Bags FAQs

Why do I need a baby sleeping bag?

Sleeping bags 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 sleeping bags safe for babies?

The Lullaby Trust, a charity which promotes safer sleep for babies, lists a sleeping bag as an essential product in their guide. A baby sleeping bag 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 sleeping bag be?

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

What should my baby wear underneath a sleeping bag?

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

Here is our baby sleeping bag guide on what layers & TOGs should be worn when

How many sleeping bags does my baby need?

We recommend investing in 2 sleeping bags 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 with removable inner padding to transform it from a 2.5 TOG to a 0.5. Learn more about our Multi TOG sleeping bag.

What makes a MORI sleeping bag a good choice?

As well as being made from the softest, safest fabrics, our sleeping bags 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 pushchair openings so they sleep on the move. Read more about our bestselling sleeping bag.