The Original Buff® is the only tube that can provide cooling, warming and chill protection in one product. How so?
Cooling
This is were 20 years of continuous improvement and a premium micro-fibre yarn come into effect.
For cooling the fabric has to be thin, breathable enough and wick moisture away from your skin. Too thin or to breathable and you can’t achieve warming.
It could be better but for the sake of also being able to warm it sacrifices a bit.

Chill Protection
It can be worn in wrinkles and wicks moisture. More details here.

Warming
Same as with cooling. It’s the balance between thickness and breathability that makes it also warm.

What Else?
Experience and stability…to be continued 🙂