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

NAME	SIZE	LENGTH	WAIST
DENIM	2-3Y	47	27
	3-4Y	53	28
	4-5Y	58	29
	5-6Y	63	30
	6-7Y	69	31
	7-8Y	76	32
	8-9Y	80	33
	9-10Y	82	34
	11-12Y	83	35