We absolutely love these Heavy Hitter bongs! Why? Well we have to start with the thick 9mm glass. Although the design may be simple, these babies are heavy for their size and much more durable than most glass bongs. The Heavy Hitter isn't loaded with features like some more expensive pieces but still provides a unique design so it doesn't look like every other bong. The "Heavy Hitter" gets the job done with a built in ice catcher, removable diffused downstem and perfectly placed colored accents.