Each year, merino sheep grow a new fleece after consuming nothing more than water, air, sunshine and grass, making it 100% renewable.

Merino wool will degrade in both water and on land and doesn’t shed any micro-plastics when thrown away or washed, making it 100% biodegradable.

Synthetic fabrics, on the other hand, are manufactured in a factory using non-renewable fossil energy. And don’t get us started on the impact that leather (a popular shoe-making material) has on the environment. Spoiler: it’s bad.

Not only does merino wool yield a better, more breathable shoe, but it does so while being gentle to the Earth. Seems like an obvious choice, if you ask us.