Sometimes you just need a little extra layer to keep cold air from creeping into your winter jacket. And lucky for you, the Giordana PolyPro Neck Gaiter does just that. Constructed from polypropylene, this seemingly simple tube-shaped accessory slips over your head and tucks into your jacket collar. The gaiter is high enough to cover your neck and act as a place to tuck your chin when cold winds start to blow. It was constructed of knit polypropylene. Now, you're probably wondering what in the world this material is' After all, polypropylene sounds similar to polyester -- so what's the difference' Well, polypropylene and polyester are both polymers, meaning that they're essentially plastics. However, where they differ is that polypropylene is hydrophobic to the point that it's unable to absorb water. And, as a result, it spreads moisture out over a larger surface area, which rapidly accelerates evaporation. So, in short, these fibers ensure that moisture is wicked away, keeping you dry and warm. Additionally, the knit gaiter features a soft finish that provides a high level of comfort against the skin. The Giordana PolyPro Knitted Neck Gaiter is available in one size in the color Grey/black.