The portable m420 has all the same features as the i420 and packs the punch of its big brother in a portable, modular design. Its compact size makes it adaptable to nearly any existing smoking or vaping platform. Features : The long-awaited Incredibowl m420 is here! Incredibowl Industries listened to your feedback, and re-imagined their award-winning Incredibowl (TM) technology in a cost-effective pocket sized model. You pack your smoking material in the glass bowl, which is shielded in the anodized aluminum BowlArmor (TM) to protect it from accidental drops and knocks.The smoke is cooled and filtered of tars before filling the shatterproof expansion chamber. Pull the BowlArmor (TM) to open the 9-hole Annular Purge Carb (TM), blasting the cool, flavorful smoke into your lungs with high-velocity jets of fresh air.Works terrifically with dried herbs/smoking material as well as concentrates - the perfect piece for on the go!Each piece is guaranteed against manufacturer's defects at the time of purchase.