US Size	Asian Size	baby Height	baby Weight	Suggest Age
0-3M	3	55-61cm	8-12.5Ibs 3.6-5.7KG	0-3Months
4-6M	6	61-67cm	12.5-16.5Ibs 5.7-7.4KG	4-6Months
7-9M	12	67-72cm	16.5-20.5Ibs 7.4-9.2KG	7-9Months
10-12M	12	72-78cm	20.5-24.5Ibs 9.2-11.1KG	10-12Months
13-18M	18	78-83cm	24.5-27.5Ibs 11.1-12.4KG	13-18Months
19-24M	24	83-86cm	27.5-30Ibs 12.4-13.6KG	19-24Months

All the Size just Suggestion ,Please Choose according to different babies and kids