Buff Polar Neckwarmer Junior - The most versatile multifunctional cold weather polar neckwear, made from 97% recycled material and offering high thermal insulation with cozy, airy fleece. PrimaLoft Bio Fleece is completely biodegradable and designed to be returned to nature. Turn, twist, fold. 4-way stretch means you can wear it as a neck warmer, hat, balaclava and more to keep you warm when temperatures drop.