well sir, if you look closely, you will notice that all our bongs have flyscreens on all openings, so no nasty critters can creep in and spoil you entropical experience.
also, we have a quick release cone piece, and five more like it, all loaded in an easy to manipulate quick-charger, so you only have to bother packing at the start of you session.
all of our glass bongs are also equipped with a testing kit that warns you when the water is getting too skanky, and should be changed.
also, all our shotties and mouth pieces have one-way spring-loaded valves, so no valuable smoke is wasted during a coughing fit.
all of our cone pipes come with a conveniently shaped resin scraper also, for those 'rainy' days. and all water is automatically filtered, and all residue conveniently stored for later discarding, or usage, as your needs arise.
with our special mouth-guard attachement, and heat sensitive shottie, you can even pull our bongs one-handed, allowing you to go on with those important 'tasks' and still indulge in your favourite passtime.
and today, i'm able to offer you a special price of..............
:D