As subject - a wind deflector I made to fit between the uprights of a roll bar. Made from a left over back window section of a Westfield hood, some glass fibre tent poles and webbing straps with velcro to fix to the roll bar. I also put some popper straps made from bits of the edge of the hood, but you could unstitch them if you don't want to stick it down.

The window is reasonably clear but has a few scuffs etc. as you would expect.

I had it on my MX5 before I got a Mazda item and it certainly helped cut down rear wind

Not really sure what it's worth but if it fits your car you can have it for say £12.50 collected or + P&P.

Oh, dimensions are c. 85cm wide x 27cm high.

Cheers

Simon