Several years ago I was given 3 boxes of covering tissue in boxes labeled Esaki Model Mfg. Ply Span. 2 boxes are Lite Flite and 1 is Super Flite. This is not the same as Poly Span or Poly T from Tom Morris. I experimented with some small pieces, it is much more difficult to get on smooth than Silkspan but it shrinks up well. Anyone used this stuff successfully? George