Why I Use Buff by William Sichel
During long ultras I have found it very difficult to control comfort levels as weather gradually, or suddenly changes during events and at different times of day or night.

Wiliam Sichel donning his buffwear before the start of the 6-Day race in Hungary
This is where the extensive Buffwear range of head and neck gear really comes into its own. When the head and neck are comfortable, somehow the rest of the body is OK too!

William at 2hrs 40mins into the 6 Day race at Balatonfüred – 8th May 2013