HOW IT WORKS | Bicycle helmet, Zippo lighter, Hugo Boss suits | Episode 21 | Free Documentary

How it Works - Episode 21 - Bicycle Helmet: It protects from the worst kind of injuries and yet it s pretty light. - Zippo lighter: With a guarantee for live come these high-end-lighters - Hugo Boss Suites: The suits from one of the most famous fashion designers in the world - Ring donuts: The favourite food of Homer Simpson