You will find our measurement size chart at the bottom of our website (in cms)
But to help here is a general sizing guide to help you decide:
XS: high street 8
S: generous 10
M: high street 12-14
L: generous 14-16
XL: 18
XXL: 20
XXXL: 22
Inside leg is 76cms, waist is elasticated and they wash well too!