Grav's quest for an aesthetically pleasing bubbler resulted in this iconic bubbler. This bubbler shares a lot of similarities with Marvel's superhero 'Thor' famous hammer called 'Mjolnir'. While you won't be flying or commanding lightning with this Mjolnir bubbler, you'll be able to summon delicious hits at your will and elevate yourself to superhero status. The long stem built around the bowl holds a small amount of water to cool and filter the smoke resulting in smooth and clean hits. There are expertly cut diagonal slits at the bottom of the downstem and their function is to prevent splashback by providing the right amount of percolation. The Mjolnir bubbler is portable and easy to carry around. There is no need to leave your bubbler behind when you are travelling. The Mjolnir bubbler is very durable and easy to use. The bowl size can hold a good amount of herbs and this bubbler delivers impressive hits.