The clear material in the kite made by Pablo is actually the laminate from car windscreens! it is supplied as a film and is easy to work with.
But it does go milky pretty quickly from all the scrunching up and being shoved into a snuffer. So it is not a good option.
As a side bit of info, the strongest colour is Blue and the weakest colours are the flouro ones followed by White and then green and red. This is due to the dye process and how it reacts with the material.
Also the most popular material in the Tornado class is Contender SK75 as it is very stable and pretty light.
SK80 is a very good option for cats as it is stronger in the warp axis than SK75 but it is not allowed in the F18 rules currently so that is a no go.... I would love to get my new kite made from SK80 <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />