Our merino wool is sourced from Uruguay and Argentina, with a mulesing free certification. The luxurious merino wool we use has a diameter between 19-24.5 microns, some of the softest available. We use both superwash and non superwash wool in our yarn blends, this is noted on our site in the description of each yarn. Superwash wool can be washed in the machine without fear of felting the yarn! Superwash or not, merino wool lends a soft hand and hardy elasticity to yarn blends. It keeps you warm like a great wool does, while also being gentle enough for next to skin wear. Merino wool is easy to dye and readily soaks up color, making it a popular favorite among dyers.