30 size	11.5 UK	12 US	6-8 year
31	12.5	13	6-8 year
32	13	13.5	8-10 year
33	1	1.5	8-10 year
34	1.5	2	10-11 year
35	2.5	3	11-12 year
36	3.5	4	12-13 year
37	4	4.5	13-14 year
38	5	5.5	14-16 year