The Wool That Survived the Atlantic

The sheep on Harris have a harder life than most. The island's western edge faces the full weight of the North Atlantic without shelter. The grass is thin and salt-bitten. The winters are long, dark, and wet. The sheep have adapted over centuries: their fleece is dense, waxy, and grows in two distinct layers — an outer layer of long kemps that shed water, an inner layer of fine fibres that trap heat.

"The animal designed this. We just figured out how to use it."

The mill at Shawbost is one of four still operating on the island. Its oldest loom dates to 1923. The weaver who runs it, Catriona MacLeod, inherited her position from her mother, who inherited it from hers. The loom has been repaired so many times that almost nothing original remains — but the pattern of repairs is itself a kind of history.

The lanolin question

Most commercial wool processing removes the lanolin — the natural wax secreted by the sheep — because it makes the yarn harder to dye and adds weight. Harris Tweed and the finest Shetland wools retain much of it. This is why the cloth repels water rather than absorbing it, and why it develops that particular warmth-without-weight that synthetic fibres cannot replicate.

Arcana's Sand Wool Scarf is woven from Shetland yarns that have been stone-washed — a process that softens the fibre without removing the lanolin — and left in their natural, undyed state. The colour is the colour of the sheep.

Photography taken in February 2026 on the Isle of Lewis. Our thanks to Catriona MacLeod and the Shawbost Mill.