Sleep Sack 2.5 TOG Willow
Baby and toddler sleep sack designed for arms-out sleepers (usually from around 3 months of age).
Size Guide
Sleep Sack (formerly Jersey Sleep Sack)
Imperial Size Chart
| ergoPouch Size
(same as size) |
Pouch Length (inch) | Child Weight (lb) | Child Height (inch) |
|---|---|---|---|
| 3-12M (000-1y) |
31.5" | 13 - 22lb | 24.4 - 29.9" |
| 8-24M (00-2y) |
35.4" | 18-31lb | 26.8 - 36.2" |
| 2-4Y | 41.3" | Follow Height Markers | 36.2 - 42.5" |
Metric Size Chart
| ergoPouch Size
(same as size) |
Pouch Length (cm) | Child Weight (kg) | Child Height (cm) |
|---|---|---|---|
| 3-12M (000-1y) |
80cm | 6-10kg | 62-76cm |
| 8-24M (00-2y) |
90cm | 8-14kg | 68-92cm |
| 2-4Y | 105cm | Follow Height Markers | 92-108cm |
Our Sleep Sack is a baby and toddler sleeping bag designed for arms-out sleepers (usually from around 3 months of age). The 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 and height 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.
- Free delivery on orders over $70*
- Estimated dispatch: 25 May 2026
- 30-day returns and exchanges
- Margaret K. G.Verified Buyer5/22/26ReviewingSleeping Bag 3.5 TOG Sleeved SageRated 5 out of 5 starsPerfect fit and nice and warm
Love these and we upped from 2.5 with 1 onsie to a 3.5 bag and so glad, baby sleeping so well and comfy! Easy on off or to change if you need to in middle of the night.
- Angela B.Verified Buyer5/20/26ReviewingSleep Sack 2.5 TOG Sleeved Oatmeal MarleRated 5 out of 5 starsYou’ll never be disappointed
Perfect as usual, baby sleeps amazing in it, thank you
- Kate C.Verified Buyer5/18/26ReviewingSleeping Bag 3.5 TOG Sleeved SageRated 5 out of 5 starsPerfect size for our newborn
So easy to use and fits our newborn perfectly - turns out she’s an arms up sleeper so great to be able to use this with her arms out after swaddling for the first few days.
