Material: The material of the shades seemed to be of very high quality. No issues here. I'm very happy with the look and feel of the shades. Technics: I purchased the battery-operated version since the hardwired versions were not in stock at the time. Unfortunately, I've had ongoing issues with them. To start with, the batteries drain very quickly. I've had to recharge them about once per month since installing them. Furthermore, - they sometimes raise and lower (just a little bit) on their own, - they "forget" their programmed limits which causes them to jam themselves - they "forget" their programmed rolling direction (I've had to reset this twice so far) - they sometimes seemingly go to sleep and will not respond unless I press the program button I'd like to try the hardwired versions to see if they suffer from the same issues. I would not recommend the battery-operated versions if you plan to raise and lower them every day.