My Cap is a fiberglass construction. You have to do some work your self on it but not that much. I attach some pictures of how the kit looks like when you buy it.
It comes in two sizes. 25% (1850cm) and 30% (2260cm).
You can see some pictures of the lager one at [link=http://www.aresti.se/indexswe.htm]aresti.se[/link] and press the galleri link on the left side. That silver Brighteling Cap is awesome. They fly really great too.