Imagine clothing that is multilayered. As you move, adjacent layers rub against each other and the friction results in a self heating effect.
The extra energy required to move about whilst wearing this kit could make it useful for eg training in cold conditions.
uhg… I thought i had a million dollar idea. I swear this was my exact thought lol. I just wasn’t sure if the required material would be too heavy for everyday use.
No problem. If you can have a million dollar idea today, you’ll certainly have others. When you do, get back in touch before you make it public 😉
Cheers,
P