They that work in fine flax. Linen of great fineness and delicacy was woven in Egypt, for the priests' dresses, for mummy-cloths, and for corselets. Solomon imported "linen yarn" from his Egyptian neighbors (1 Kings 10:28), and the Phoenicians a linen fabric for their sails' (Ezekiel 27:7).
In the general decline of Egyptian prosperity, caused by the circumstances of the time, the manufacturers of linen would suffer. They that weave networks; rather, they that weave while clothes. Cotton fabrics are probably intended.
Shall be confounded; literally, shall blush, or be ashamed.