The product components are well made and of high quality. The problem I had, was I had to bend and adjust the brackets to minimise cutting of the plastic roll bar cover. The recommended slot size to cut in the plastic would not have cleared the brackets and I would have had to cut a piece at least an inch deep (front to back) to be able to clip them back on. Instead of retaining the 2 x 90 degree angles in the brackets, I had to bend them to a 'Z' shape to make good.
All this hassle was down to either the roll bar fixing points on the car being slightly askew (doubtful), or the holes in the Perspex being slightly out of position (probably), and for this reason I would not recommend this product. However, now it is on the car it looks great and definitely reduces in-cabin buffeting.
Take care not to lose the rubber washers as the ones supplied are not a standard size, as I found out when I had to order some replacements due to dropping one behind the seat into the roof well and losing it forever!
Easy to fit using the instructions. A vast improvement from the factory fitted wind blocker on my 2013 Roadster ( steel folding roof ). Looks good and improves rear visibility.