The Sleep Onesie is a TOG-rated sleeping bag alternative, designed to be worn on its own during sleep or with a Layer/PJs underneath for warmth and comfort.
Size Guide
Sleep Onesie
Please use your child's height to find the most appropriate and safe size for them. The Sleep Onesie should be fitted around the neck to avoid your child slipping through. 2.5 TOG and 3.5 TOG Sleep Onesies should not be used in a 5-point harness or car seat for safety reasons.
| ergoPouch size | 6-12M | 12-24M | 2-3Y | 4-5Y | 6-8Y | 8-10Y | 10-12Y |
|---|---|---|---|---|---|---|---|
| Same as size | 0-1y | 1-2y | 2-3y | 4-5y | 6-8y | 8-10y | 10-12y |
| Pouch length (cm/inch) | 74cm / 29.1" | 84cm / 33.1" | 88cm / 34.6" | 98cm / 38.6" | 110cm / 43.3" | 120cm / 47.2" | 130cm / 51.2" |
| Chest width (cm/inch) | 27.5cm / 10.8" | 30.5cm / 12" | 32cm / 12.6" | 35cm / 13.8" | 38cm / 15" | 40cm / 15.7" | 42cm / 16.5" |
| Child height (cm/inch) | 68-84cm / 26.8 - 33.1" | 76-92cm / 29.9 - 36.2" | 92-100cm / 36.2 - 39.4" | 108-115cm / 42.5 - 45.3" | 120-130cm / 47.2 - 51.2" | 130-140cm / 51.2 - 55.1" | 140-150cm / 55.1 - 59.1" |
- Free delivery on orders over $100*
- Estimated dispatch: 25 April 2025
- 30 day returns & exchanges*
- Emma H.Verified Buyer3/31/25ReviewingSleep Onesie 3.5 TOG DragonfliesRated 5 out of 5 stars“So snuggly” says Mr 2.5
I bought this sleep onsie because our 2.5year old sleeps in a double bed but refuses to sleep under the covers. Not such a big deal over summer but now it’s getting colder in NZ he was waking up around 3-4am because he was cold. Since we bought the sleep onsie, he’s back to sleeping through the night. “It’s so snuggly”, he says. He loves it so much that it’s really hard to get him to take it off in the mornings!
- Maya P.Verified Buyer3/21/25ReviewingSleep Onesie 2.5 TOG PartyRated 5 out of 5 starsBees knees!
I absolutely love Ergopouch products, and have been a loyal customer since I had a child. Beautifully designed, excellent quality products! A beautiful Australian brand that doesn’t compromise quality. This design is an absolute favorite
- Maya P.Verified Buyer3/21/25ReviewingSleep Onesie 2.5 TOG PicnicRated 5 out of 5 starsBees knees!
I absolutely love Ergopouch products, and have been a loyal customer since I had a child. Beautifully designed, quality products! A beautiful Australian brand that doesn’t compromise quality. Love