I own the Sirrus SL, purchased in Sept. 03. The colour is Sangria, not the Molten that they use now (the jacket is now the Alpha SL). It does seem to me that the fabric changed slightly, the newer version has a "heavier" hand. The old version is just one type of fabric, the 290N paclite. The upper portion is not reinforced with a heavier fabric, which is probably why mine is getting full of holes from errant picks and general wear and tear. I like the jacket for it's lightness, great fit, and great breathability. I have a Beta AR and don't like it as much, but it is much more durable.