Not just doubled as in "kinged". And no, doubling a Half Persian doesn't make it a "Full" Persian, at least no in chainmaille land.
This is "doubling" as in "layering", emphasizing the "stacking" effect of Persian weaves.
Very tactile. Somewhat lacy, but sturdy enough to feel like a rope.
Not a particularly difficult weave either, just tricky to start, as usual with many Persian weaves, specially when the ring size is way bigger than the classic Half Persian 3 in 1.
From the side, it looks kind of feathery.
and the bottom (or valley) side is still wider than the top.
Very supple. Both feminine and masculine. A classic modern!