The chain is not being produced anymore. What is out there is out there... As for the fabrics, you have choices, but Wool Elastique (98% wool, 2% elastic) is best, and then you need to find the color or dye it. This material is NOT cheap -- about $80/yard (USD). The patterns from Xscapes are good, but you will need to modify (tailor) a lot to fit your individual frame...
--Dave