When it comes to insulation and breathability, wool is hard to beat. The natural fabric is also antibacterial and temperature-regulating: a versatile powerhouse. But wool also has a few drawbacks:
- The fabric absorbs moisture and dries slowly. Therefore, once wet, wool is incredibly heavy and less suitable for outdoor activities.
- You can’t just wash wool in the washing machine unless your machine has a special wool wash cycle.
- Wool is quite expensive, especially if you opt for a special kind like merino wool.
To turn all those disadvantages into advantages, fleece was developed in the 1970s: the synthetic alternative with the same insulating properties. But without the drawbacks (or the sheep).