First, make sure not to cover any of the lasers with the Velcro or foam pads. Follow these instructions to install:
Step #1: Peel Velcro fasteners from the backing.
Step #2: Affix Velcro to the inside of the helmet, with the sticky side adhering to the helmet and the Velcro facing out.
Step #3: Connect foam pads to the Velcro.
Note: Placing the foam on the back of the helmet, over speaker holes will not interfere with audio transmission.