Poppers Flip Top Cap WYFF’R GRAY – This invention from the USA will definitely inspire you too. A lid that opens easily and closes effortlessly, conveniently with one hand. So you are well prepared for the right moment and you never have to look for a lid again. Poppers are less likely to be emptied by mistake. The lid opens easily and closes effortlessly with one hand. The gray variant of WYFF’R is suitable for all square 25ml bottles from the manufacturer Lockerroom.