size down ... it has slim leg opening not skinny ... 7.5 on size 32 ... 7.2 on 31 it does stretch a lot after month or so .. i bought it for my friend (size 32)
for myself size 31 i've should size down

p.s. thighs are really big ... i don't mind the leg opening ... p.s.s. same on the 401's  thigh so don't buy online try them on if you can ...