Skullcandy's Full Metal Jacket ear buds rest in a durable housing (let's call it a bunker) made of metal. The girthy 11mm power drivers pump out armor-piercing decibels that would make even Full Metal Jacket's own Gunnery Sgt. Hartman proud. According to Skullcandy "not even Wonder Woman's magical gold wristbands could withstand." We don't doubt them.