Add cool air as a booster when inhaling. Only possible with the Twister. Made from the best Swedish steel comes this spring that will bend the bowl in any direction. A wide variety of metal pipes present specially designed cooling systems. Unfortunately, most om them are in the highest price range. Twister is designed with heat-extracting fins and a spring that will let fresh air get through while inhaling. Just twist the stainless steel spring as desired. Twister can easily be transformed into a "non-pipe" by connecting the mouthpiece to the bowl. All parts come easily apart without use of threads. Available in three different sizes to fit your specific habits. This fool-proof gadget is delivered in a red suade pouch with instructions and, as with all of our products, a life time warranty.