Fleeces have been a menswear go-to winter-layering option for the past few seasons and don't seem to be slowing down anytime soon. GORPcore and sustainability being among fashion's biggest buzzwords certainly helped bring this trusted outdoor item back to prominence. Once worn only by mountain climbers in the most brutally cold conditions, the fluffy layers now come in a range of styles. And bonus ... many brands needing to minimize their carbon footprint began creating fleeces out of recyclable materials like paper and plastic.

What makes this synthetic top a must-have? The versatility is unmatched compared to other winter layers like wool sweaters, turtlenecks and cardigans. Fleeces now come in funky colors and fuzzy fabrics that are either full-zip or half-zip sweaters or jackets. A fleece is comfortable, yes, but it is also something that you don't have to think about—throw one on with a pair of sweats, chinos or jeans, and you're out the door. They even look excellent with a topcoat, dad cap and shades. We've rounded up nearly two dozen of the best ones in a range or price points and colors.