These are the flexible sizes for respective age group as per mentioned in CM

ITEM NAME	SIZE	LENGTH	WIDTH
Boys Denim	3-6M	36	22
	6-9M	38	44
	9-12M	41	25
	12-18M	43	26
	18-24M	46	27
	2-3Y	51	28
	3-4Y	56	29
	4-5Y	61	30
	5-6Y	66	32
	6-7Y	75	34
	7-8Y	76	35
	9-10Y	87	36
	11-12Y	90	38