Chen Mu didn't really know how good the X300 was, but he had a certain understanding of such things as battle suits. Most low-end battle suits were made from materials having high energy resistance, though such battle suits still had limited utility. By comparison, high-grade battle suits weren't like clothes at all but were a type of card appliance. They could provide a card artisan with excellent defensive capabilities, unlike energy cloaks, which required the card artisan to be distracted by controlling them.