Why 17.5 micron merino is worth the cost
· Mai Tran
Merino is graded by fibre diameter, measured in microns. Below 18 microns the fibre bends before it can prickle, which is the entire difference between a tee you forget about and one you peel off.
17.5 is where we landed: fine enough to wear against skin, coarse enough to survive a washing machine.
