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Front of the ergoPouch Sleep Onesie 2.5 TOG Grey Marle

Preschooler wearing an ergoPouch Sleep Onesie 2.5 TOG Grey Marle

Child sitting in ergoPouch Sleep Onesie 2.5 TOG Grey Marle, warm for the winter

ergoPouch Sleep Onesie feature compilation

ergoPouch Sleep Onesie 2.5 TOG Grey Marle

Child playing in ergoPouch Sleep Onesie 2.5 TOG Grey Marle, warm for the winter

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2.5 TOG

Sleep Onesie 2.5 TOG Grey Marle

Name: Sleep Onesie 2.5 TOG Grey Marle
Brand: ergoPouch
SKU: EPSO-2.5T06-12MGM19
Price: 55.96 USD
Availability: InStock
Rating: 4.8 (1954 reviews)

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.

4.8

Rated 4.8 out of 5 stars

1,954 Reviews

Size

Size Guide

6-12M 12-24M 2-3Y 4-5Y

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.

See full size guide for all products

Product variants

Free delivery on orders over $70*
Estimated dispatch: 14 April 2026
30-day returns and exchanges

4.8

Rated 4.8 out of 5 stars

Based on 1,954 reviews

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1,954 reviews

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Ranil W.
Verified Buyer
4/9/26
Reviewing
Sleep Onesie 2.5 TOG Oatmeal Marle
Rated 5 out of 5 stars
So 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... :)
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Aziza A.
Verified Buyer
4/3/26
Reviewing
Sleep Onesie 2.5 TOG Petit Pretzel
Rated 5 out of 5 stars
Top quality
Quality is good
Keeps my baby warm
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Sirrah B.
Verified Buyer
3/24/26
Reviewing
Sleep Onesie 2.5 TOG Grey Marle
Rated 5 out of 5 stars
Super warm
Really too warm to get much use out of it where I live!
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