Question 2/6 in Questions on the product details FAQs
Merino wool is generally less than 24 micron (µm) in diameter.
Basic Merino types include:
strong (broad) wool 23–24.5 µm,
medium wool is 19.6–22.9 µm,
fine 18.6–19.5 µm,
superfine 15–18.5 µm,
and ultra fine 11.5–15 µm.[1]
[1] Australian Wool Classing, Australian Wool Corporation, 1990, p. 26
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