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

Kids (Size in CM)
Size	Approx Age	Chest (CM)	Waist (CM)	Hips (CM)
134	9Y	67	59	72
140	10Y	70	61	75
158	13Y	79	67	84
164	14Y	82	69	87

 

Boy's sweatpants:

Material and technologies:

• 60% cotton, 40% polyester (weight 260 g/m2)
• Oeko-Tex Standard 100 certificate

Washing and care:

• Wash with similar colors at a temperature of up to 40° C.
• Wash and iron on the left side.