A tube of stretchy fabric that you can use as a neck warmer, balaclava, beanie hat, head band, pirate hat, sling, blindfold, bikini, the list is almost endless.
The original Buff brand has often been copied, but never bettered.
A must on all trips into the outdoors, usefull to keep hair out of the way in the kitchen, or even in the operating theatre, keep it in your pocket or around your wrist until needed.
There is a design to match any outfit, if it is cold there are fleece and windproof versions and UV protection is excellent.
Buy a Buff, you won't regret it.