Ultra-thin closed cell foam lends additional flotation to surface patterns. Use it to wing hoppers, stoneflies and caddis. Tie extended bodies for mayfly, duns and spinners. Great wing case possiblities for emergers. Neat stuff! Stacked colors can be glued with Super 77 for killer sandwich flies.

2 sheets each of .5mm and 1mm.
Sheets are ~1 3/8" x 4 5/8"