Grosnug unique 2 in 1 swaddle baby sleep bag

A revolutionary New 2 in 1 Swaddle and Newborn Grobag from safe sleep experts The Gro Company. The only bedding you will need for your newborn!

The Grosnug enables you to swaddle arms in or out so your baby is all set for a great night’s sleep, it also makes it perfect for transitioning your baby in to their first Grobag. Extremely easy to use with no folding needed and a long zip that opens from the bottom, eliminating frustrations of unwrapping baby and disturbing them during night changes.

Made from supersoft and stretchy cotton, the Grosnug is available in two different weights – Light and Cosy, for different room temperatures. Babies love it!

Available now from the

The Gro Store



The Grosnug is the UK’s first, patented 2-in-1 swaddle and baby sleep bag. It aims to eliminate the complications of traditional swaddling.





When used as directed, the International Hip Dysplasia Institute acknowledges the Grosnug as a “hip-healthy” product. Baby feels comforted and secure while parents are reassured that baby is able to sleep in a hip-healthy position. The Grosnug has a unique shaped skirt giving baby plenty of room to kick and sleep in a natural froggy legged position.

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What to Wear Guide


What your baby wears will depend on the weight of Grosnug and the temperature of the baby’s bedroom. (In the same way as you would adjust nightclothes). As a guide, please refer to the table below. Please remember, though, that babies are all different and, just as with blankets and sheets, you will soon discover what your baby is most comfortable wearing & placing your fingers on your baby’s chest is the best indicator of whether they are too hot/too cold/just right as babies’ hands often feel cool.

Sleeveless or short-sleeved bodysuit
Short-sleeved and long-sleeved cotton body suits
All-in-1 cotton sleep suit or long sleeved bodysuit
large_clothing_iconsGrosuit – All-in-one cotton sleep suit
Cosy: in cool rooms of 16-20°CLight: in warm rooms of 21-25°C
24-27°C (75-81°F)
23°C (74°F)
21°C (69°F)
20°C (69°F)
18°C (65°F)
16°C (61°F)


  • Available in Light and Cosy weights (Light is for rooms between 21 and 25°C and Cosy is for rooms between 16°C and 20°C)

  • One size fits newborns 5lbs to 12lbs

  • Allows natural leg position; officially recognised as "Hip healthy" by the International Hip Dysplasia Institute

  • Includes FREE Nursery Thermometer and what to wear guide

  • Chest lined for secure swaddle comfort

  • What to wear guide provided on pack

  • Highest quality construction

  • Baby safe YKK zips, Nickel free poppers, and no rough edges or seams


  • All Grosnugs can be machine washed at 40°C

  • They can be hung out to dry or tumble dried on a low setting. As with all cotton goods, we have designed our Grosnugs to allow for up to 5% shrinkage

  • If your child has any allergies and you wish to wash your Grosnug at 60°C, you should allow for a little more shrinkage

  • When washing, it is best to keep the zip closed

  • You can iron your Grosnug on a low heat if desired, always keeping the iron away from the zip or cover the zip with a cloth

  • We recommend that you wash dark colours separately for the first few washes

  • We also recommend that you wash your Grosnug with a detergent that is free from bleaching agents in order to retain the original colours.

Award Winning

Loved by Parents 2016 Best Sleep Aid
Best Baby and Toddler Snug 2016 Gold
Junior Design Awards Grosnug Bronze 2016
Prima Gold 2016
Prima Baby 2016 Silver
Prima Baby and Pregnancy 2016
Mumii Best Baby and Toddler Gear - New to market 2015
Loved By Parents 2015 Nursery Bedding


5 Stars

Perfect for Newborn

Nice and cosy and makes bedtime a lot easier!

5 Stars

Makes bedtime much easier and less worrying!

I know my baby is warm enough (thanks to the free thermometer and the guidance of what to dress your baby in when using the Grosnug) and she can't slip under her blankets because you don't need to use any. I haven't used the swaddle feature as my baby likes her arms out but think it is a great idea especially for progressing from a swaddle to a sleeping bag. Very pleased I bought the Grosnug.

5 Stars

Lovely and soft!

Lightweight, great for warm evenings when the baby will only sleep swaddled.

Girl in Zig Zag Grobag


Visit our FAQs page to find out more.


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The Gro Company’s entire range is available to buy online at ‘The Gro Store’. Buy any 2 items save 10% and receive FREE delivery on orders over £10.

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