What is my size?

SIZES A B  A B
SMALL 34-36 30-32" 35-37" 78-82 cm 88-92 cm
MEDIUM 36-38 30-34" 37-39" 82-86 cm 92-96 cm
LARGE 38-40 34-36" 39-41" 86-90 cm 96-99 cm