quality is very good, I really like the lack of cords, the drop length is control by strips of velcro, easy to use and no tangles like with the cords.    I did purchase additional velcro material so I could set up additional lengths at the top of the blind so when I need to roll them up completely I do not have to disturb the velcro strips that came with the blinds with which I have set up the drop length I want.