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: 11 December 2025
- Extended returns until 31 January 2026
- Cecilia T.Verified BuyerReviewingSleep Onesie 0.2 TOG Grey MarleI recommend this productRated 5 out of 5 stars10 months agoGift for grand-daughter
My grand-daughter loves these Onesies! They get washed every day and are good quality. They are ideal for cool summer days.
- ClaraReviewingDisney Sleep Onesie 0.2 TOG Toy StoryI recommend this productRated 5 out of 5 stars2 years agoGreat!
Have use it a few times but it will be definitely be a good suit to use once it gets hot. So far it has been good
- NicoleReviewingDisney Sleep Onesie 0.2 TOG Toy StoryI do not recommend this productRated 1 out of 5 stars2 years agoDisappointed
Sleep bags are a couple months old at most, not worn every night and are already splitting at the seams. Had the same experience with thicker togs as well. Won’t purchase again