If you're not familiar with Buffs, they are a tube of stretchy fabric that is typically worn over the head, neck or face. There is such a wide variety of ways to wear one that it's convenient for your whole ride. This ingenious thin and lightweight garment is capable of keeping those parts of the body warm but not too warm even when exercising vigorously. For example, I recently went on a ride that started at 3c and ended up at 14c. I didn't have to take my Buff off once.
Reflective Buff in the R-Fire Carbon design. Compared to the cheapo copies I've got, the first thing you notice is the quality of the material. It's feels softer and thicker. It's also a little bigger so covers more. It's based on the Original Buff with the addition of a vertical stripes of retro-reflective Scotchlite on each side. The Reflective Buff ensures you'll be seen at night and in poor light conditions. Exactly what you want when riding a bike. However, if you want something even more visible, they do one in fluro yellow!
Buffs also come treated with Polygiene. It's a silver ion treatment that acts as an anti-bacterial agent. It's skin safe and reduces odours which are common with materials that wick moisture away. Those smells will eventually overcome the Buff. When that happens, just chuck it in the washing machine at a low temperature and drip dry. Being thin it'll dry in no time.
With so many designs available, I can't decide which one to get next. Which one will you choose?