As a 100% natural fibre, wool is 100% biodegradable, and in actual fact, it’s pretty good for the plants. When it decomposes, wool releases nitrogen, magnesium and sulphur into the soil which activates plant growth. What’s more, when you have natural fibres like wool instead of petroleum-based fabrics, you’re directly reducing the number of microplastics entering our environment during the lifetime of a product.