This is the jet suit Dean test-pilots in Ghost Storm. Compared to other jet packs, it doesn’t look very special on the outside– I wanted it that way because it’s a prototype and not built to be fancy (although I do like the Appleseed-look with the flip-up fins on the jets).
What made the suit special to me is what you don’t see: that Dean controls it by imagining himself doing certain dances to trigger certain functions, and these thoughts are relayed by the millions of nano-probes he ends up having implanted for other reasons (you’ll have to read it for yourself to find out why).
I also thought it was important to emphasize how uncomfortable it would be to fly this way. Yes, it would look cool and be very fun over short distances, but can you imagine holding your body rigid like a plank for hours on end while commuting from Minneapolis to California? As the Five for Fighting song says: men weren’t meant to fly.