With the Poppers Sniffer Cap Big you have your poppers ready for use at any time. You can easily open and close the cap with one hand. With the Sniffer Cap you have no direct main contact and so no skin irritations occur. Simply unscrew the original lid from the manufacturer Sniffer Cap and you are ready to use. After use, screw the original cap from the manufacturer back on. The size Big is suitable for all square 25ml bottles from the manufacturer Lockerroom.