Baby and toddler sleep sack designed for arms-out sleepers (usually from around 3 months of age).
Size Guide
Sleep Sack (formerly known as the Jersey Sleep Sack)
Our Sleep Sack is a baby and toddler Sleep Sack designed for arms-out sleepers (usually from around 3 months of age). The Jersey Sleep Sack has a slim-fit, stretchy design similar to that of a swaddle and is recommended as baby's 'First Sleep Sack' after the swaddling phase is over. Please use your child's weight to find the most appropriate and safe size for them. A sleep sack should be well fitted around the neck and the armholes to avoid your baby slipping through. It should also be bell shaped in the bottom to allow for easy leg movement. Please do not size up to the next size until your child meets the weight requirement, for safety reasons.| ergoPouch size | 3-12M | 8-24M | 2-4Y |
|---|---|---|---|
| Same as size | 000-1y | 00-2y | 2-4Y |
| Pouch length (cm/inch) | 80cm / 31.5" | 90cm / 35.4" | 105cm / 41.3" |
| Child weight (kg/lb) | 6-10kg / 13 - 22lb | 8-14kg / 18-31lb | Follow Height Markers |
| Child height (cm/inch) | 62-76cm / 24.4 - 29.9" | 68-92cm / 26.8 - 36.2" | 92-108cm / 36.2 - 42.5" |
See full size guide for all products
- Free shipping on orders over $70
- Estimated dispatch: 16 March 2025
- 14 day returns and exchanges for full priced products
- Alyssa P.Verified Buyer3/7/25ReviewingSleep Sack 2.5 TOG Oatmeal MarleRated 5 out of 5 starsLove this sleep sack!
My daughter has done really well transitioning from a swaddle to the is sleep sack. We made the switch at 4 months and haven’t looked back. It keeps her warm enough during the cold nights! I like that she can wear it for the next 9 months .
- Egypt3/5/25ReviewingSleep Sack 2.5 TOG Sleeved Oatmeal MarleRated 5 out of 5 stars5 Stars
My baby does not sleep very well in his bed, especially on his back he will not sleep on his back. He will wake up if he’s on his back, but using this sleep sack, he sleeps on his back and he sleeps a little longer in his sleep sack. I absolutely love this sleep sack. It has helped me so much. And it’s helped my baby.
- Sofia R.Verified Buyer3/3/25ReviewingSleep Sack 2.5 TOG DragonfliesRated 5 out of 5 starsAmazing quality
Best sleep sack on the market and no polyester filling