Left letter (e.g. M/L) = size below chest
Right letter (e.g. M/L) = size at the chest
Band/ BustCorresponds to bra sizes:
S/S65-70A-D
S/M65-70E-F
M/M75-80A-D
M/L75-80E-F
L/L85-90A-C
L/XL85-90D-E