Why haven't space suits changed in 45 years?

When we watch sci-fi shows, we see these uber-fancy futuristic space suits. Yet when we look at the actual real space suits in use by astronauts today, we see the same big puffy white suits that look unchanged since the Apollo missions in the late 60's and early 70's. What gives? How come we don't have fancy space suits yet? It turns out that there are pretty good reasons. Space suits need to do specific things to protect astronauts. While the suits have been greatly upgraded over the years, there are still limited options in how we can combine certain technologies to provide that protection.

Screenshot of Martian Marine: "The Expanse" TV series, Legendary Television Distribution, SyFy, and Amazon Prime Video
https://www.primevideo.com/detail/0MW6F85MD8486AE43GONNOR5F1/

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