Sleep Sack 3.5 TOG Sleeved Oatmeal Marle
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)
| 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 |
| 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" |
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.
See full size guide for all products
- Free delivery on orders over $70*
- Estimated dispatch: 16 October 2026
- 30-day returns and exchanges
- Warmth
- Comfort
- Fit
- Quality
- Design
- Emma M.Verified Buyer9/27/26ReviewingSleep Sack 3.5 TOG Sleeved Elephant ParadeRated 1 out of 5 starsAwful
Won’t let me return
Won’t answer my endless emails asking for help
- Elizabeth B.Verified Buyer9/8/26ReviewingSleep Sack 2.5 TOG Sleeved WillowRated 5 out of 5 starsWarm and cozy
We love this sleep sack. We keep the rooms at 68 at night and this is perfect to keep baby warm and comfy.
- Sarah C.Verified Buyer7/30/26ReviewingSleeping Bag 3.5 TOG Sleeved DragonfliesRated 5 out of 5 starsBest sleepwear
Absolutely love these sleeping bags, it takes the stress out of worrying about what to put my daughter in for sleep.
