It's made of a simple woven cotton, dyed in Asia (I couldn't any more specifics than that!) but the design was printed here in Barcelona. The drape is simple, as you would expect for a summery cotton fabric.
The wholesaler had 3m to spare, so I split the bolt with another shop; she'd been trying to sell this piece for six months! The colour is a little darker than in the photos, almost rust-like.