The i420 brings a list of world-class features to the table, using revolutionary engineering to provide smoother, cooler, easier hits, and our patented filtration method to filter harmful tars, allowing the good stuff to pass through. Add to that the i420s virtually indestructible design, simple cleaning, and lifetime warranty, and its easy to see why it wowed judges in Amsterdam. All models come with certificate of authenticity and lifetime warranty. Features : The Incredibowl Pipe is the product of countless hours of design, testing, research and development.Featuring a borosilicate glass bowl so you only taste what you are smoking rather what you are smoking out of, the creators of the Incredibowl smoking pipe designed Bowl Armor TM technology so it could withstand a serious impact. Also made with 6061 aluminium and state-of-the-art computer aided design, the Incredibowl bong designers perfected the airflow with the Annular Purge Carb TM and the Smoke Injection Nozzle. For the Expansion Chamber - the clear tube through which you inhale the smoke - Incredibowl Industries utilized shatterproof polycarbonate which is also used in bullet proof windows.After over a year and half of dedicated design and development, the Incredibowl pipe creators completed the Incredibowl i420 edition. The brand new Incredibowl i420 is easy to smoke, easy to clean, easy on your lungs and very hard to break.