Of course you can order 2 different sizes. However, you will find it easier to measure your foot size beforehand to find the right shoe for you.
You will also save yourself the effort of packaging and return postage. Please note, a refund for the returned shoes will take a few days and, during this time, your money will not be readily available.
For measuring your feet, we have provided a video. You can see how easy it is to quickly measure your feet. Please watch the video by following this link:
ZAQQ size guide