Some call it a Buff, we call it a Ruff!  A unique RUN3SIXTY-inspired design.
 
The Ruff is an indispensable multi-function item of clothing every runner should own.  Use it as a headband, hat, neck warmer, face-protector, bandana or wristband; keeping you warmer in the winter and shielded from the wind, or protected from dust, sunshine and soaking up sweat during the summer.