Light and durable
Wool is so light compared to in example leather, and it is one of the most durable fibers known.
It can resist tearing and it can bend back on themselves more than 20,000 times without breaking. (Cotton breaks after 3,200 bends, silk after 1,800 bends and rayon fibres breaks after only 75 bends.)
It is also the most resilient fibre because it has a natural crimp, that helps it keep in shape. Wool fibers can be stretched and still bounce back to their original shape.
That’s why our felted woolen shoes are so light and durable.