Size Guide

Cocoon Swaddle Sack

Please use your child's weight to find the most appropriate and safe size for them. To comply with safety requirements, our Cocoon Swaddle Sacks have a firm fit around the neck, shoulder and chest area to prevent your little one from slipping inside. You should be able to put 2 fingers inside the neck opening for the correct fit. Please do not size up to the next size until your child meets the weight requirement, for safety reasons.


ergoPouch size Newborn 0-3M 3-6M* 6-12M
Same as size 0000 000 00 0
Pouch length (cm/inch) 52cm / 20.5" 60cm / 23.6" 70cm / 27.6" 76cm / 29.9" (0.2 & 1.0 TOG)
80cm / 31.5" (2.5 TOG)
Child weight (kg/lb) maximum 3-4kg / 7-9lb 3-6kg / 7-13lb 6-8kg / 13-18lb 8-10kg / 18-22lb
Child height (cm/inch) maximum 55cm / 21.7" 62cm / 24.4" 62-68cm / 24.4" - 26.8" 68-76cm / 26.8" - 29.9"

*Previously size 2-6 months


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 Newborn 0-3M 3-6M 6-12M 1Y 2Y
Same as size 0000 000 00 0 1Y 2Y
Layer length (cm/inch) 50cm / 19.7" 55cm / 21.7" 61cm / 24" 67cm / 26.4" 78cm / 30.7" 83cm / 32.7"
Child max weight (kg/lb) 4kg / 11lb 6kg / 13lb 8kg / 18lb 10kg / 22lb 12kg / 27lb 16kg / 35lb
Max Child height (cm/inch) 55cm /21.7" 62cm / 24.4" 68cm / 26.8" 76cm / 29.9" 84cm / 33.1" 92cm / 36.2"

Portable White Noise Machine
ergoPouch size Metric Imperial
Weight 96g 0.2lb
Diameter 8cm 3.2"
Height 3.7cm 1.5"
Charging Cable Length 1m 38"