Folding wings of the 777X take shape (video)

That's because it's not the entire wing as people imagine with headlines. Take a look at that first picture at the top of the article. That's no winglet. It has joints. That's the "folding wing".

Just another lesson that headlines are noting more than attention draws but unfortunately all that most people read. It's the same as judging a book by its cover.

I'm going by memory, but the tips are around 10' each, and add up to a reduction in width of something like 22' overall.

That may not sound like much, but it's enough to allow the planes to fit into gates already built at airports around the world. Lets the plane land & accommodate passengers at more places and saves the airports money in construction to widen the gates.