Merino wool is a natural fibre grown year-round by Merino sheep, consuming a simple blend of natural ingredients including sunshine, water, fresh air and grass. Every year these sheep produce new fleece, making wool a completely renewable fibre.
Arguably the oldest-known animal fibre, wool is composed of a natural protein called keratin - the same protein found in human hair - with a small amount of calcium, sodium and fat. The surface of each fibre is covered in scales, which are important in making felts and traditional woollen cloths.
The diameter of merino wool fibre is generally less than 22 micron.
Merino Extrafine – if the diameter of Merino wool fibre is less than 19.75 micron, it can be called merino extrafine.
Merino Ultrafine – if the diameter of Merino wool fibre is less than 17.75 micron, it can be called merino ultrafine.