Let me start by saying I've worn these GETOEU slides for a full month now - to the beach, in my bathroom, even on quick grocery runs. The first thing you'll notice is how ridiculously lightweight they are (like walking on air pillows!), but also how the foam material immediately signals 'budget shoe'. They're the kind of sandals you'd pack without thinking twice because they take zero space in your luggage.
The waterproof claim holds up beautifully - I've worn them through post-shower puddles and sudden rain showers without any issues. The open-toe design does keep feet surprisingly dry, though I noticed after whole-day wear at the pool, there's slight moisture buildup between toes. They're definitely more 'shower chic' than 'street style' - the foam construction looks obviously synthetic up close.
Size-wise, they run large! I'm normally a US 7 but could've gone down to a 6. The lack of arch support means they're not great for long walks (my feet protested after 30 minutes on concrete), but perfect for quick dashes to grab mail or lounge by the pool. What surprised me most was the grip - even on wet tiles, I never felt like I'd slip.
Would I wear these with a sundress? Probably not. But as functional $10 sandals that dry instantly, don't harbor smells, and survive being tossed in a beach bag daily? Absolutely worth keeping by my back door all summer.