Icon style creation help


I really like these styled icons, can anyone help on how they would have been created?

I’ve tried to mimic the style by creating a shape and repeating through copying the base shape then moving it along numerous times which doesn’t give the same effect, I have also tried -> Object -> offset path and various things but I cannot seem to match the style.


Use this one for creating looks like that. http://www.adobe.com/sea/products/illustrator.html