The best baby swim diapers — whether disposable or reusable — keep messes in so Baby can chill out! Whether you’ve just set up the inflatable kiddie pool or you’re taking your canopied floaties to the beach, or you’re headed to an all-inclusive resort, baby swims nappy is a baby gear essential if your little one isn’t potty trained. For the record, swim diapers are different from regular ones because they won’t absorb water, swell, and inevitably, fall off (more on that below). Not only is this a comfort issue for Baby, it’s a sanitary issue for everyone else, too.
To save you time, we’ve rounded up the best swim diapers available and addressed some frequently asked questions about how swim diapers really work. From popular reusable brands like Happy Nappy and Splash About, to disposable options from Huggies and Pampers, to bathing suits with a built-in swim diaper (!) these adorable options will help ensure good, clean fun for everyone. So grab the kid and reef-safe sunscreen and head on down to the water!
Do swim diapers really work?
Yes, they do the job – but they do the job differently. Regular diapers will swell and fall off if they’re submerged, and swim diapers let the liquid pass through. Their sole purpose is to keep solids contained as opposed to providing absorption, so — you guessed it — pee usually passes right through (although, some reusable diapers are able to hold it all in). Therefore, it’s best to put swim diapers on just before hitting the water. We should also point out that before heading to a public pool, be sure to check if there are specific rules regarding non-potty-trained splashers. You may be required to put two layers on your kiddo, such as a disposable
That said, there is an exception: Swim diapers don’t come in newborn sizes because their stools aren’t solid enough to be contained in a swim diaper.
Do swim diapers go over regular diapers?
Nope, they can be worn all their own! But again, they’re literally just for swimming, so unless you want to clean up a wet car seat or beach blanket, use regular diapers whenever you’re on dry land.
What kind of diapers do you use for swimming?
Glad you asked! You can use disposable diapers which are tossed after each use, or reusable diapers, with which you can flush any solids and wash (similar to a regular cloth diaper).
But for a more specific answer to this question, scroll on! Below, find our favorite swim diaper picks, including disposable diapers, reusable diapers, and bathing suits that function as a swimwear all-in-one!
Best Baby Swim Diapers
If your Finding Nemo fan loves to “just keep swimming,” have them slip on one of these Pixar-themed diapers before hitting the pool! Unsurprisingly, this leading baby brand has nailed the disposable swim diaper. Available in sizes for kiddos from 16 to 32+ pounds, they’re designed with adjustable sides for a snug fit to contain messes without excess swelling for a fun day of water play. After all, what water baby wants to be anchored down?
Pampers Splashers are designed to have a swimwear-like fit, making them a favorite for parents of soon-to-be “big kids.” They’re designed with all-around stretch so they can easily be pulled on and off (even when wet!) plus side closures for easy, clean changes. Add in the adorable sea creature and summer prints, and you’ve got a diaper that does the job — and looks good while doing it. Since they’re available in sizes to accommodate babies from 13 to 40 pounds, you’ll love using Splashers from the time your little one is months-old until he or she is potty trained.
Hello Bello fans, rejoice! The fan-favorite diaper brand now has swim diapers for summertime fun. And, they have all the features you and your LO love about regular Hello Bello nappies: they’re stretchy, comfy, plant-based, and made without icky stuff like latex, parabens, and pthalates.
Best Reusable Baby Swim Diapers
At first glance, it’s easy to see that Splash About’s swim diapers are different. A high-rising waistband plus extra material that covers the upper thighs is stretchy and snug, offering extra leakage protection for Mom’s peace of mind. These swim trunk-diaper hybrids are washable like any other reusable swim diaper and can fit baby bums from the time they’re newborns ’til they’re toddling at 3 years old. (For extra protection, you can layer with a swim diaper liner and wrap, as well.) They’re also UPF 50+ to help with sun protection. Oh, and can we mention how freakin’ cute they are, too? Check out all 14+ designs.
These simple-but-effective reusable swim diapers have earned Amazon bestseller status for a reason (over 7,000 ratings!). Available in five solid hues ranging from bold to neutral, they’re easy to match with your kiddo’s favorite rash guard top, and even have UPF 50+ protection. A stretchy waistband makes the i play. swim diapers easy to pull on and off (just like “big kids” would do), but if the diaper gets full, four side snaps make it easy to take off while the mess stays put.
Is your little splasher particularly stylish? A favorite among Amazon shoppers, the Nageuret Reusable Swim Diaper is chic enough to rival the swimwear of any Insta-influencer. It’s designed with multiple rows of snaps for an adjustable fit that’ll grow with your baby for at least a year. And if you’re not satisfied over time? The company’s “1-Year Better Than Money Back Guarantee” will give you a refund and a new diaper. The icing on the cake is that you’ll be supporting a family-owned business in Colorado that also donates 5% of proceeds to Compassion International.
It’s no secret that babies outgrow their clothes seemingly overnight, so if you’re looking for an adjustable swim diaper to last you a full year — maybe even two! — the Amazon bestselling ALVABABY swim diaper is just the ticket. That’s because it comes with three rows of snaps for a tighter or looser fit for growing baby bums. If you’re skeptical as to whether it’ll hold up for a year, the brand offers a generous one-year guarantee where you can receive a replacement diaper or refund if you’re unsatisfied. Bonus: They come in two packs so you’ll always have a dry one on hand.
Best Baby Swim Nappy & Bathing Suit
And now, the Splash About swimsuit version! If your heart melts at the sight of teeny-tiny one-pieces, this nappy/bathing suit combo is perfect for pre-potty-trained tykes. The bottom half contains ribs around the thighs and waist to keep accidents from spilling up or out, all without the need of another swim diaper underneath. These suits are also chlorine-resistant so they’ll look just as cute from the beginning of summer to the end.
If you’re looking for a swimsuit/swim diaper brand with lots of prints to choose from, i play. offers 19 sweet options for your precious water bug. The bottom half fits snugly so potties stay put, plus the suit is UPF 50+ to help prevent sunburns. It’s also Oeko-Tex certified for safety against harmful chemicals. Choose from animal, stripe, and floral motifs, as well as ruffled styles for your little water princess.
i play. has tons of bestselling swim diapers, so why not try their swimming trunks with the swim diaper built-in? Sometimes you want your little one to dress the part, but it’s important that they’re still comfortable too. These trunks give the best of both worlds according to the parent reviews on Amazon.