Nice touch, my first flatwounded set of strings and very happy with the sound and feel, they are quite thick although it says light, not too bendy, but still great, you are not supposed to bend too much with them anyway, the 3rd is also wounded.
I had a problem and dented the 6th while winding it... it broke :-( there is their weak point, I haven't been playing around with them too much, but seems they won't be very durable if you use a lot of aggressive bending and playing or if your frets aren't properly set and polished, as I said, perfect for jazz style.