There is 2-3% difference according to manual measurement.
Please note that slight color difference should be acceptable due to the light and screen.
-----------Sleeping Bag Size Chart-----------
★Size:0-3Months
Length: 50cm/19.7inch
Bust: 50cm/19.7inch
Sleeve long: 24cm/9.5inch
★Size:3-6Months
Length: 52cm/20.5inch
Bust: 52cm/20.5inch
Sleeve long: 26cm/10.3inch
★Size:6-12Months
Length: 56cm/22.1inch
Bust: 54cm/21.3inch
Sleeve long: 28cm/11.1inch
★Size:12-18Months
Length: 60cm/23.7inch
Bust: 56cm/22.1inch
Sleeve long: 30cm/11.9inch
--------------Romper Size Chart--------------
★Size:70(0-6Months)
Length: 52cm/20.5inch
Bust: 52cm/20.5inch
★Size:80(6-12Months)
Length: 54cm/21.3inch
Bust: 55cm/21.7inch
★Size:90(12-18Months)
Length: 58cm/22.9inch
Bust: 56cm/22.1inch
★Size:100(18-24Months)
Length: 61cm/24inch
Bust: 58cm/22.9inch
Thank you for your careful reading of our size chart.If your kid is chubby, please select the size of the larger size.Thank you very much