The original note, as written at the time
Springy firm boots that aid your locomotion. An air driving suit that funnels air from the outside onto your body like a body AC, so that you never ever feel sweaty.
Ongoing development
Springy firm boots that aid locomotion, and an air-driving suit that funnels outside air onto the body like a personal air conditioner, so that you never feel sweaty.
The two halves belong together and they are solving the same problem from different ends: the body is a machine that has to dump heat, and in this climate it is bad at it.
The suit is the more useful idea, and the physics is favorable. Moving air across skin is how sweating works, and a garment that keeps a thin layer of air moving — rather than trapping it, as clothing does — will feel substantially cooler than the same garment still. The energy to do this can come from walking, which is when you need it.
The design problem is where the air comes from and where it goes. Intake at the ankles and exhaust at the neck gives a natural chimney, and the fit has to be loose enough to flow and close enough not to look like a costume. That is a tailoring problem, and it is the whole problem.
The boots are the weaker half but they are not silly. A spring in the sole returns some of the energy of a step, which is the principle of every running shoe since the beginning. Making it deliberate and stiff enough to matter is a design decision about gait rather than a gadget.
What I would guard against is the version sold to office workers as a comfort accessory. The people who need this are working outside — the market, the site, the boda — and they need it cheap, washable and hard to break.
A garment that manages heat is not a luxury in a hot country. It is infrastructure you wear.