S M L XL 12/18 AY 18/24 AY 24/36 AY 25/32 26/32 27/32 28/32 29/30 29/32 30/30 30/32 31/30 31/32 32/30 32/32 33/30 33/32 34 34/30 34/32 36 36/30 36/32 38 40