It can always be challenging to order gear online. However, to mitigate this risk I recommend you at least have some basic knowledge of New Balance shoes.
I have been very familiar with their shoes and felt confident ordering this particular model online.
Now, to the specifics of the shoe.
I do have a wider foot, and New Balances typically facilitate wider feet runners, in my opinion.
This shoe seemed very light weight for trail running. I do appreciate the mesh, just be sure to wear socks that will "wisk" away the moisture.
My only complaint, in the beginning of the season, my legs are too white and the black shoes magnify my pasty white legs! ;)