Do you know which one of the two: Polyester or Rayon don't fade when washed with bleach?

Definitely use poly, rayon shouldn't be bleached.

Poly! Rayon isn't colorfast and is also easier to melt.

I knew my quilting buddies would have the answer quickly so I could start right away!
thanks!
andrea

Alway Poly when it is something that will be laundered a lot....

definitly poly. my DD is a pro machine embroiderer and does school swim suits, always uses poly because of chlorine in the water.