If you like drinking beer as much as you enjoy smoking dry herb, and you love to party, the multifunctional Knockout Beer Bong & Gravity Bong Hybrid is the perfect device for you! The Knockout easily attaches to any bottle you have lying around. This versatile and portable device can be used solely as a beer bong wherein you fill the bottle with beer, grip The Knockout, flip it around, and chugalug away!  You can also use it solely as a portable, indestructible water bong using the included herb bowl attachment.  Or, if you're really brave, you can use The Knockout both ways at the same time, to get really "knocked out" so to speak.  The Knockout is perfect for parties! In fact, you can’t find anything that’s better than The Knockout when it comes to party fun and versatility!  Chugging a beer and smoking at the same time is a feat everyone will want to try at least once.  The Knockout is easy to use, it's virtually indestructible, and it disassembles to fit easily in your backpack or bag. It's constructed using food-grade silicone and stainless steel and it's easy to clean and dishwasher safe! The Knockout has a lot going for it and it all comes in a cloth pouch that's perfect for travel.