Let’s get one thing out of the way: SeaSuckers are vacuum mounts, not suction cups. There's a big difference between the two.
First, each 6” SeaSucker vacuum mount is pull rated at over 210 lbs. Each 4.5” SeaSucker is pull rated at over 120 lbs. We’d like to see a suction cup that could pack that kind of punch.
Suction cups also lack one incredibly important safety feature: the indicator band. SeaSucker’s orange indicator band begins to appear once the vacuum mount loses some of its suction, letting you know it’s time to re-pump well before it detaches.
Lastly, unlike suction cups, there’s no licking required, unless you’re into that sort of thing, and that’s cool - we don’t judge.