Firstly, there’s a reason fleece jackets are still considered staples for cold weather: they are masters at retaining warmth.
In fact, fleece is made from polyester, and its unique fabric properties were initially designed to mimic warm wool.
However, unlike wool, which is dense, holds water, and isn’t very breathable, fleece retains its insulating properties with added breathability.
Plus, it is also moisture-resistant and durable.
Furthermore, fleece jackets can also be versatile depending on the climate you’re in.
And, “Fleece weight” describes how thick and tightly woven the fleece is. So, the higher the fleece weight, the warmer the jacket.
Finally, fleece weights are generally broken down into three weights: lightweight (100 g/m2), midweight (200 g/m2), and heavyweight (300 g/m2).