*Charts is for reference only. Fit may vary depending on construction, materials & manufacturer.
3M means (3 Months), 6M (6 Months), For grown-up kids say 24 M ( 24 months),  2T (toddler, 2 years old), 3T (toddler, 3 years old) so on …

Kidooki Size US Size Mapped UK Size Mapped EU Size Mapped
3M ( Months) 0-3M ( Months) 0-3M ( Months) 50-56 cm
6M ( Months) 3-6M ( Months) 3-6M ( Months) 56-62 cm
9M ( Months) 6-9M ( Months) 6-9M ( Months) 68-74 cm
12M ( Months) 9-12M ( Months) 9-12M ( Months) 74-80 cm

*Charts is for reference only. Fit may vary depending on construction, materials & manufacturer.
3M means (3 Months), 6M (6 Months), For grown-up kids say 24 M ( 24 months),  2T (toddler, 2 years old), 3T (toddler, 3 years old) so on …

Kidooki Size US Size Mapped UK Size Mapped EU Size Mapped
18M ( Months) 18M ( Months) 18M ( Months) 80-86 cm
24M ( Months) 24M ( Months) 24M ( Months) 86-92 cm
2T 2T 2-3T 92-98cm
4T 4T 3-4T 98-104cm

*Charts is for reference only. Fit may vary depending on construction, materials & manufacturer.
5  means 5 years, 6 means 6 years.. so on 

Kidooki Size US Size Mapped UK Size Mapped EU Size Mapped
5 5 4-5 104-110 cm
6 6 5-6 110-116 cm
7 7 7-8 116-122 cm
8 8 8-9 122-128 cm
9 9 8-9 128-134 cm
10 10 9-10 134-140 cm
11 11 11-12 140-146 cm
12 12 12-13 146-152 cm