PACK OF 10 sheets LUTRADUR. Min sheet size is 9"x7" (23x18cm) Contains: 4 sheets Lutradur 30 4 sheets Lutradur 70 2 sheets Lutradur 100 Lutradur is a bonded fabric which behaves like Tyvek when it is heated with an iron or heat gun. It can be coloured before heating or after heating - I find it easier to do it before heating and I use Fabric Paints as the heat from the heat gun then seals the colour. Lutradur has the advantage over Tyvek that if you use Fabric Paints you only usually have to colour one side as the paint bleeds through the material. When heated with the gun it will bubble (not as much as Tyvek) and will form holes - brilliant for textiles by putting a contrast fabric behind the Lutradur. Unlike Tyvek it does not go hard when heated so it can be stitched through after heating. Also used for creating unusual background effects and toppers for cards. The coloured photo shows Lutradur used as the background for this mixed media piece.