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: 13 July 2025
- 30 day returns & exchanges*
- CourtneyReviewingSleep Onesie 1.0 TOG Grey MarleI recommend this productRated 5 out of 5 stars7 months ago5 Stars
Purchased this for my 5 month old, we never swoddled her. We tried the closer convertible bag suit but because she moved so much at night, when we woke up she ended up with both her legs in one leg hole.
This suit is a great option and seems to be going the trick.
- DemiReviewingDisney Sleep Onesie 1.0 TOG PrincessI recommend this productRated 5 out of 5 stars1 year agoPerfect
Perfect, love the short sleeves. The leg cuffs are snugg enough to stay in place all night, so even tho its huge it fits fine and will for ages!!
- ClaraReviewingDisney Sleep Onesie 1.0 TOG Toy StoryI recommend this productRated 5 out of 5 stars1 year agoGreat product
It has been a great purchase. So far so good for our little one