It's a traditional 3 pc design, same as Jetspeed/U+/RBZ, some Warrior models, and a bunch of others (as opposed to the 2 piece style which the elbow/forearm is all one piece). The images above show the bicep guard (not the forearm padding) stuck inside the elbow cap on the bottom pic, it should slide on the outside of the elbow cap not the inside, so the top pic is how they should go.