There has been 1 time when wearing them that the button popped out however depending on the pants you use it on and the material of them may affect that. I love them though and they work great for my pair of jeans that needed a bit more room in the waist
http://lorenzouwyq614.huicopper.com/get-denim-waist-extender-for-waistband-extenders
I Want A Denim Waist Extender For Denim Jeans