I think its spelled Flite skin , its an amazeing product that looks like a thin sheet of finished fiberglass . Now you will think its expensive but one sheet will last you over 10 planes for small projects .Aprox $30. I purchased one roll and still have enought to make 10 sets of flaps if needed , I have lined my 73 Fuseelages , build flaps , control horns , reinforced cowls , ect ect .
And the best part is that its porous , so a littel CA and its on for good .
Googles the words , try a few differant spellings and you will be happy with the product