The Extra 300L in this scale has a large canopy covering a tandem seat cockpit. If you want it closed, this is the only option you have a chance of doing that since the kits injected part doesn’t fit closed. Even if you elect to open it, when the inside and outside are painted, it creates a nice scale thickness canopy. The material used is about .55 mm thick so it's stiff enough to hold it shape. That also makes it easy to cut and sand to size. I’ve used a lot of vacuform canopies over the years and this is one of nicest I've worked with. Brengun also makes a masking set for this (item BRL48157). This is a good addition to the Brengun kit and I highly recommend it if you want the canopy closed. Thanks to Brengun for sending this sample and as always, to IPMS for allowing me to tell you about it.