Hey Guys - I noticed some traffic at RiverBum coming from here and came to check it out! I'm more on the technical end of things and I'm not much of a fly tyer, but I went ahead and contacted our supplier about the Bone Crusher materials. He said the following:

Bone Crusher:
Body = Ice wing fibers
Wing = Sculpin wool nat, white.

I hope that helps. If you want any other details just let me know!

Matt