What is the coating of this spring roll called, and how is it made? I had these spring rolls at a restraunt, but as you can see the outside was quite different to the 'normal' spring rolls I usually see.

The texture is light and crispy and looks 'stringy (but doesn't taste or feel that way).

I think it was quite interesting and would like to give them a shot but aren't sure what they're called to search for a recipe.
It's regular roll made with net rice wrapper
It's common wrapper in Vietnam. 
Here's site when you can see the package and rolls made with it bearnakedfood