The stays, magnets, and case are all excellent quality. I have not yet worn these with a jacket (the reason I bought them).
The magnets are so strong that it's impossible you lose them. They are so tight in place. Leather case is stylish and you keep'em in one safe place.
Very durable and love the size variations
Work great. Like the rubber grips on them.
The power stays give your shirt a nice clean look. This is perfect when you are wearing a dress shirt with no tie and you want that clean cut and or snappy casual look.