This is 100% Falkland wool.
The term, Falkland wool, refers to wool grown only on the Falkland Islands and not in any other location. The wool clip from these islands is a very good white and is grown from Merino and Polwarth breeds. The majority of the wool produced emanates from the Polwarth. The clip is relatively small compared to other world clips and was, until recently sold predominantly through the UK. Fineness ranges from 18/19microns to 32/33microns with the bulk of the wool being in the 27-30microns category. The length is 80-100mm with the fleece showing good bulkiness and soft handle. In some ways, and for certain applications, it can be considered better than Australian grown wool, especially for knitting yarn, where good bulk is required. ~World of Wool
More shamelessly colorful sock yarn can be found at my shop - with new colorways going up all the time.