Ray and Mark, doesn't it dry out kind of really quick? I used the fat polyester yarn (shown in the photo of message #7 in this thread), which is different from Mark's around the time Syntec came out. There was a paper who tested "Synthetic moss" with Phalaenopsis to understand the acidification of media. I contacted the Chinese researchers, and tried to obtain the material, but it was a dead-end. Then I found the thick yarn at Jo-ann's. I wasn't paying too much attention, and it was drying way too fast, so I wasn't successful with Phalaenopsis pulcherrima. But the low water holding capacity could be good for orchids which should get dried quicker. After seeing Matt's and Mark's comments here, I used it as the "top moss" for some Neofinetia (the base, Koke-dai, is still real sphagnum moss).