Sleep Onesie 3.5 TOG Daisies
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 weight and height to find the most appropriate and safe size for them.
Imperial Size Chart
| ergoPouch Size
(same as size) |
Pouch Length (inch) | Chest width (inch) | Child Height (inch) |
|---|---|---|---|
| 6-12M (0-1y) |
29.1" | 10.8" | 26.8 - 33.1" |
| 12-24M (1-2y) |
33.1" | 12" | 29.9 - 36.2" |
| 2-3Y | 34.6" | 12.6" | 36.2 - 39.4" |
| 4-5Y | 38.6" | 13.8" | 42.5 - 45.3" |
| 6-8Y | 43.3" | 15" | 47.2 - 51.2" |
| 8-10Y | 47.2" | 15.7" | 51.2 - 55.1" |
| 10-12Y | 51.2" | 16.5" | 55.1 - 59.1" |
Metric Size Chart
| ergoPouch Size
(same as size) |
Pouch Length (cm) | Chest width (cm) | Child Height (cm) |
|---|---|---|---|
| 6-12M (0-1y) |
74cm | 27.5cm | 68-84cm |
| 12-24M (1-2y) |
84cm | 30.5cm | 76-92cm |
| 2-3Y | 88cm | 32cm | 92-100cm |
| 4-5Y | 98cm | 35cm | 108-115cm |
| 6-8Y | 110cm | 38cm | 120-130cm |
| 8-10Y | 120cm | 40cm | 130-140cm |
| 10-12Y | 130cm | 42cm | 140-150cm |
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.
- Free delivery on orders over $70*
- Estimated dispatch: 11 May 2026
- 30-day returns and exchanges
- Hayley R.Verified Buyer4/23/26ReviewingSleep Onesie 3.5 TOG Bon AppetitRated 5 out of 5 starsSuch a good alternative!
My daughter has hated sleep sacks since she was about 10 months old and we switched to the sleep layers over summer, and the sleep onesies are now perfect for the cooler nights! She's in a floor bed so it gives me peace of mind she and get up and move around without falling over too. Also love they're 100% cotton so they don't flare up her eczema!
- KATHLEEN D.Verified Buyer4/20/26ReviewingSleep Onesie 2.5 TOG Elephant ParadeRated 5 out of 5 starsSleep onesie 2.5 TOG
Excellent sleep option for babies. We have used these for all 6 of my grand babies/toddlers and consider them the best on the market over other brands. We love that they are all cotton and wick away moisture keeping the littles comfortable while they sleep.
- Ranil W.Verified Buyer4/9/26ReviewingSleep Onesie 2.5 TOG Oatmeal MarleRated 5 out of 5 starsSo cosy
We love ot, so practical and cosy, the material feels very soft and our little one's temparature is well regulated in this Sleep Onesie. Can recommend! We ordered it too big, so she will be able to use it for longer... :)
