SipSafe has developed an anitspike device for glass bottles that will aid in the prevention of drug use. Simply open the bottle wait 30 seconds for gas to disperse then just pop the bottleblocker inside the rim of the bottle and your good to go! The is a filtration system that will stop pills as little as 4mm in dimetre and will make powders congeal. This device is perfect for any occassion or nighout whether you are attending a venue, gig, concert, house party or festival this device will protect you and ease you mind. Made from a flexible Bio-degrable plastic it will easiler apply itself to any glass bottle.