Dear Customer :
Thanks a lot for choose 
Here are some tips about size before you buy it,
Please choose the shoes size according to your foot length, NOT insole length.
it is recommended that people with wide feet and fat feet choose a size up
Before choose your size , you'd better measure your feet length.
How to Measure Feet Length
Please measure your feet length carefully, with the method of the picture below:
SIZE LIST
Foot length 21.5(cm) = You should choose Size 33
Foot length 22.0(cm) = You should choose Size 34
Foot length 22.5(cm) = You should choose Size 35
Foot length 23.0(cm) = You should choose Size 36
Foot length 23.5(cm) = You should choose Size 37
Foot length 24.0(cm) = You should choose Size 38
Foot length 24.5(cm) = You should choose Size 39
Foot length 25.0(cm) = You should choose Size 40