High-tech cleat under the mat’s edge—60 or more per trampoline, depending on the model. Made from fiberglass-reinforced polypropylene and shaped like a wide letter ‘T’, these have a rounded, midline socket into which the balled top of each fiberglass support rod fits. The lower ends of the rods connect to the metal base of the trampoline.

The cleat, which is inserted into a reinforced pocket in the mat, harnesses the downward tension of each jump, ensuring that the ball at the top of the rod stays wedged into the socket as it moves up and down.