Don't worry, your extender isn't going anywhere once it's on! And here's why:
First off, when you slide it on, it works a bit like a magic trick. It traps some air inside, creating a suction effect that keeps the extender snug and secure.
Second, because this isn't a one-size-hopes-to-fit-all situation, your extender is tailored to your exact measurements. It's like it's been custom made just for you (because, well, it has!), ensuring it fits perfectly and stays put, no matter what you're up to.