The Sleep Onesie is a TOG-rated sleep sack alternative, designed to be worn on its own during sleep or with a Romper/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 shipping on orders over $70
- Estimated dispatch: 05 February 2025
- 14 day returns and exchanges for full priced products
- Laura S.Verified Buyer1/9/25ReviewingSleep Onesie 3.5 TOG DragonfliesRated 5 out of 5 starsGreat find
Really pleased this solves the issue of my toddler struggling to stay under covers having grown out of the sleep bags. Good value if an offer on.
- Shaun B.Verified Buyer1/2/25ReviewingSleep Onesie 2.5 TOG Sweet OrchardRated 5 out of 5 starsGood Product
Good product
- Ping Man T.Verified Buyer12/24/24ReviewingSleep Onesie 2.5 TOG DaisiesRated 5 out of 5 starsLove this
This is my first time getting the sleep onesie. I used the sleep suit before but find that a little bulky. Didn’t even realize that have this as an option that’s equally warm. My kids are very comfortable in it. Highly recommend!