Toddler Swimsuit Options: Growing Swimmers

As our toddlers grow more confident in the water, choosing the right swimsuit becomes about more than just cute patterns. We’ve explored the best options for comfort, sun protection, and practicality—so your little swimmer can focus on having fun, and you can focus on making memories. Here’s what we’ve learned about the most thoughtful swimsuit choices for growing swimmers.

Prioritizing Comfort and Sun Protection

When it comes to toddler swimwear, comfort and sun protection are the foundation for a great day at the pool or beach. Toddlers are constantly on the move, so their swimsuits need to keep up—without causing irritation or leaving delicate skin exposed to the sun’s rays. That’s why we’re big fans of rash guard one-pieces and coordinated sets, which offer more coverage than traditional swim trunks or bikinis. These suits typically feature long or short sleeves, extending protection to the shoulders and upper arms, which are often the first places to burn.

The best rash guard suits, like those from Hanna Andersson, are made with UPF-rated fabrics that block up to 97% of harmful UVA and UVB rays, coming close to the gold standard of UPF 50+ protection [1]. This means less time wrestling with sunscreen and more time splashing. We’ve also noticed that fuller-coverage suits help keep sand and bugs at bay, reducing the risk of rashes and bites—especially important for sensitive toddler skin.

Another key comfort factor is the quality of the fabric. Look for suits that are soft, stretchy, and free from scratchy seams or tags. Oeko-Tex certification is a plus, signaling that the fabric is free from harmful chemicals [1]. For toddlers who are especially sensitive, flat seams and tagless designs can make a world of difference.

Chafing and sand irritation are real concerns, especially after a few hours of digging, running, and rolling around. Rash guard suits with short-style bottoms or snug, boxer-brief-like linings can help prevent sand from sneaking into uncomfortable places. This not only keeps toddlers happier but also means fewer post-beach complaints and less time spent shaking out swimsuits.

For families who frequent both pools and beaches, it’s worth noting that chlorinated water can be tougher on swimwear than fresh or salt water. Durable, high-quality fabrics will hold up better over a season of cannonballs and sandcastles, and may even survive to be handed down to a younger sibling [1].

Practical Features for Easy Changes and Active Play

Toddlers are not known for their patience, especially when it comes to getting dressed or undressed at the pool. That’s why easy-on, easy-off designs are a game changer. Swimsuits with front zippers, snaps at the crotch, or magnetic closures make bathroom breaks and diaper changes much less stressful for everyone. For example, the Hanna Andersson Baby Rashguard Swimsuit features crotch snaps, so you can handle quick changes without fully undressing your child [1].

Swim diapers are another essential for toddlers who aren’t yet potty trained. Unlike regular diapers, swim diapers are designed to contain solid messes without ballooning up in the water [4]. Both disposable and reusable options are available. Disposables like Huggies Little Swimmers are easy to pull on and tear off, making them ideal for travel or quick changes at the pool. Reusable options, such as those from Alvababy or Charlie Banana, feature adjustable snaps for a custom fit and can be washed and reused throughout the season, saving money and reducing waste [4].

For active swimmers, it’s important to choose suits that stay put during all kinds of movement—jumping, running, and even the occasional somersault. Look for snug but comfortable fits, secure waistbands, and designs that won’t ride up or slip down. Boxer-brief-style linings in trunks and snug one-piece suits are especially effective at keeping everything in place [1].

We also want to highlight the growing availability of adaptive swimwear for toddlers with unique needs. Brands like Target’s Cat & Jack offer adaptive swimsuits with features such as Velcro closures, abdominal access for feeding tubes or insulin pumps, and flat seams for sensory comfort [2]. These thoughtful details make it easier for all kids to enjoy the water, regardless of mobility or medical needs. Some adaptive suits even include magnetic or snap closures for quick bathroom access, making them practical for both caregivers and kids [2].

Styles and Brands That Grow With Your Toddler

Toddlers grow at lightning speed, so finding swimwear that adapts to their changing bodies is a smart investment. Adjustable features—like drawstring waists, multiple snap settings, and stretchy fabrics—help extend the life of a suit, making it more likely to last through a growth spurt or even be handed down to a sibling [4]. Reusable swim diapers with multiple snap configurations, for example, can fit a range of sizes and shapes, making them a favorite among parents who want both value and flexibility [4].

When it comes to durability, not all swimsuits are created equal. Brands like Hanna Andersson, Boden, and Primary consistently receive high marks for their long-lasting materials and thoughtful construction [1][5]. These suits are designed to withstand repeated exposure to sun, sand, and chlorine, and many parents report that they hold up well enough to be passed along to younger siblings. For families who swim often, investing in a couple of high-quality suits can actually save money in the long run.

We also appreciate brands that offer mix-and-match separates, allowing you to customize fit and style as your child grows. This is especially helpful for kids who are between sizes or have different proportions on top and bottom. Separates also make it easy to replace just one piece if it gets lost or outgrown.

For those who love a little personality in their swimwear, there’s no shortage of fun prints and patterns—from science-inspired motifs to bold, bright colors. Many brands release new designs each season, so there’s always something fresh to discover [5]. And for parents who value sustainability, some companies now offer suits made from recycled materials or with eco-friendly certifications.

Finally, don’t forget about accessories that complete the swim ensemble. Sun hats, cover-ups, and water shoes can add extra protection and comfort, especially for long days outdoors. Look for hats with wide brims and UPF ratings, and consider hooded towels or ponchos for easy drying and warmth after a swim [1][5].

Whether your toddler is just starting to paddle or already making waves, the right swimsuit can make all the difference. Thoughtful features, sun-smart fabrics, and adaptable designs help ensure that every swim is a happy one—for both kids and parents. Here’s to many more splashy adventures, with comfort and confidence at the heart of every swim.

Sources

[1] 13 Best Kids Swimsuits, Rash Guards, Sun Hats, and Other Beachwear of 2025 — https://www.nytimes.com/wirecutter/reviews/our-favorite-kids-beachwear/

[2] Adaptive kids swimwear: Where to buy one-pieces, trunks, and more — https://www.reviewed.com/accessibility/features/adaptive-kids-swimwear-where-buy-one-piece-trunks

[3] 13 Best Toddler and Baby Swimsuit Styles of 2025 — https://www.thebump.com/a/best-baby-swimsuits

[4] 5 Best Swim Diapers for Infants and Toddlers — https://www.goodhousekeeping.com/childrens-products/g64596279/best-swim-diapers/

[5] Kids Swimwear – The season’s Cutest Swimsuits, Cover-ups and Towels — https://www.lucieslist.com/guides/summer-series/best-kids-swimwear/