21 micron merino roving
This 21 micron merino wool roving is possibly the best wool you can find and great for felting, needlefelting, spinning and weaving. It is chearper than the 14 to 19 micron merino.
Generally, merino wool is a very soft, fine wool.
Merino, unlike some other natural fibres, is naturally elastic.
Merino is great for clothing that comes into contact with body sweat. This type of merino is still soft and can come into contact with skin. It will absorb moisture (up to 30% of its own weight).
27 micron merino wool would feel scratchy on your skin and is used for 3D projects. So 21 microns is comfortable for clothing. It’s easy to take care of and felts very quickly due to its elasticity.