Eve has identified three basic forms, side chairs, armchairs and strawback chairs. Strawback chairs are usually associated with Orkney but, rather as Fair Isle has its own subspecies of wren, it turns out that the Fair Isle strawback ones display subtle differences in their construction. The one above, from Stoneybrek in Fair Isle, incorporates strengthening in the form of corner dowels that are unique to Fair Isle.
Eve has established that the technique used in Fair Isle differs from that employed elsewhere in that the straw was generally knotted rather than stitched, making the Fair isle chair backs unique. Indeed, the stitched examples she found may have been replacements for earlier knotting. The framing in Fair Isle was different, too.
Her research also explored the history of Fair Isle, and she notes that shipwrecks were not only a frequent feature of island life but also provided the timber for chair-making.