Mix and match our TOG-rated Rompers, designed to be worn as a Pajama underneath any of our swaddles or sacks for sleep, or on their own as daywear.
Size Guide
Long Sleeve Rompers
Please use your child's weight and length to find the most appropriate and safe size for them. Long Sleeve Rompers are designed to be a slim-fit for comfort under their pouch.
| ergoPouch size | 00000M | Newborn | 0-3M | 3-6M | 6-12M | 1Y | 2Y |
|---|---|---|---|---|---|---|---|
| Same as size | 0000 | 0000 | 000 | 00 | 0 | 1Y | 2Y |
| Romper length (cm/inch) | 42cm / 16.5" | 50cm / 19.7" | 55cm / 21.7" | 61cm / 24" | 67cm / 26.4" | 78cm / 30.7" | 83cm / 32.7" |
| Child max weight (kg/lb) | 3kg / 6.6lb | 4kg / 11lb | 6kg / 13lb | 8kg / 18lb | 10kg / 22lb | 12kg / 27lb | 16kg / 35lb |
| Max Child height (cm/inch) | 50cm / 19.7" | 55cm /21.7" | 62cm / 24.4" | 68cm / 26.8" | 76cm / 29.9" | 84cm / 33.1" | 92cm / 36.2" |
Short Sleeve Rompers
Please use your child's weight and length to find the most appropriate and safe size for them. Short Sleeve Rompers are designed to be a slim-fit for comfort under their pouch.
| ergoPouch size | 0-3M | 3-6M | 6-12M | 1Y |
|---|---|---|---|---|
| Same as size | 000 | 00 | 0 | 1Y |
| Romper length (cm/inch) | 40cm / 15.7" | 43cm / 16.9" | 46cm / 18.1" | 61cm / 20.1" |
| Child weight (kg/lb) | 6kg / 13lb | 8kg / 18lb | 10kg / 22lb | 12kg / 27lb |
| Max child height (cm/inch) | 62cm / 24.4" | 68cm / 26.8" | 76cm / 29.9" | 84cm / 33.1" |
- Free delivery on orders over $70*
- Estimated dispatch: 18 December 2025
- Extended Holiday Returns until Jan 31st
- Kristen S.Verified Buyer12/15/25ReviewingLong Sleeve Romper 1.0 TOG DragonfliesRated 5 out of 5 starsBeautiful Fabric
This onesie is easily one of the nicest I have ever felt. The material is so soft and warm without being too thick. The sizing does seem slightly large, but the size 1 still fits my 12 month old without being too loose and we will be able to get lots of wear out of it. Love the multiple zips. Would buy this product a million times over!
- Lorena R.Verified Buyer11/10/25ReviewingLong Sleeve Romper 1.0 TOG Sweet OrchardRated 3 out of 5 starsThe fabric is good but the size it is a bit tricky
The size it is a bit tricky as the sleeves are very narrow and they run large in the lenght . I don’t know if it is worth the money and I didn’t read that products that are on offer are not refundable . I won’t sure I will purchase this type of product again as it is very difficult to put it on because the sleeves . It is very stretchy but not easy to put it on if baby has a vest underneath
EUergopouch US11/12/25Hi Lorena
Thank you so much for taking the time to share your feedback about the Long Sleeve Layer sizing, particularly regarding the sleeve width. We're truly sorry to hear that it didn't fit as expected.
To help us better understand your experience and look into this further, one of our customer support agents will be reaching out to you shortly to gather a few more details. We'd be more than happy to review your specific case and see how we can make things right.
Thank you again for your valuable feedback and for being part of our community.
- Clare H.Verified Buyer11/7/25ReviewingLong Sleeve Romper 1.0 TOG WillowRated 5 out of 5 starsGreat quality
Great quality, good sizing and washes well. We find the sleeve cuffs are often quite tight on these suits.
