Slightly fiddly to use at first with the poppers and adjusting the sides to the right 'width' but it's easy now! They take quite a long time to dry with the cotton layers but that's a small price to pay for something which is totally reusable. I have long length liners (as well as ordinary length for everyday use) which I wear when I'm playing sports and they're invisible under running tights. They feel a bit odd at first as they're thicker than an ordinary liner, but I'm now unaware of them. One point: they won't work with shorts or boy-leg pants due to the way the fasteners work. The washing instructions on the pack sound very complicated but I just rinse mine and put them in the washing machine on a 30 degree wash - no problems!