In 1992, the book "Snowcrash" introduced numerous elements of fictional (some seemingly impossible) technologies. It appears that some of these are becoming real. All page number references are from paperback edition, 1993.
p.270-271 mentions: "A full black overall ... with ... airbags around the neck."
Current technology:
Published in 1995, "Diamond Age" described numerous technologies based cheap/ubiquitous nanotechnology. The key device in the book, the "Young Lady's Illustrated Primer", contained numerous technologies itself.
Perhaps the most interesting is its software, which trained the user, through simulated game-play, how to cope with real world (even real time) problems.
There is documentation for an instance of such training by World of Warcraft:
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