Cloth Diaper Swimwear: A Complete Guide to Waterproof Fun for Babies

Taking your little one to the pool, lake, or beach is a summer highlight, but it comes with a unique diapering challenge. Regular cloth diapers absorb water like a sponge, becoming heavy and saggy, while disposable swim diapers often lack eco-friendly credentials. That's where cloth diaper swimwear steps in—a smart, reusable solution designed specifically for water play.

In this guide, we'll cover how swim diapers differ from everyday cloth diapers, what to look for when choosing baby swimwear, and how to care for your waterproof cloth diapers. Whether you're a seasoned cloth diapering parent or new to the game, you'll find practical tips to keep your baby comfortable and your outings mess-free.

What Is Cloth Diaper Swimwear and How Does It Work?

Cloth diaper swimwear is specifically designed to contain solid waste in water without absorbing pool or ocean water. Unlike your regular cloth diaper stash (which uses absorbent materials like bamboo or hemp), swim diapers have a waterproof outer layer—typically PUL (polyurethane laminate) or TPU—and a mesh or fleece inner that lets liquid pass through while trapping solids. This design prevents the diaper from turning into a waterlogged balloon.

Most swim diapers are reusable, making them an eco-friendly and cost-effective alternative to disposable swim diapers. They come in two main styles: pull-on swim pants (similar to training pants) and snap-closure covers that can be paired with a thin insert or used alone. For example, the 2319-Cover works beautifully as a swim cover when you skip the absorbent insert, giving you a trim fit under a swimsuit or rash guard.

• Swim diapers are not designed to hold urine; they only contain solid waste. Change your baby's swim diaper every 30–60 minutes or after a bowel movement.

Why Choose Reusable Swim Diapers Over Disposables?

Disposable swim diapers are convenient but generate a lot of waste—especially if you swim frequently. A single baby can go through dozens of disposables in one summer. Reusable cloth diaper swimwear, on the other hand, can be washed and reused hundreds of times, saving money and reducing landfill contributions.

Beyond sustainability, reusable swim diapers often fit better and are more comfortable. They come in adjustable sizes (like one-size-fits-most or snap-down rise settings) and fun prints that make your baby look adorable at the pool. Many parents also appreciate that cloth swim diapers can double as a regular diaper cover for quick trips to the grocery store or park, adding versatility to your stash.

• Reusable swim diapers typically cost $12–$25 each, while disposables run $0.50–$1 per swim session. Over a summer, reusables pay for themselves.
• Look for swim diapers with elastic leg gussets to prevent leaks around the thighs—a common issue with disposables.

Key Features to Look for in Baby Swimwear Diapers

When shopping for cloth diaper swimwear, consider the following features to ensure a leak-free, comfortable fit. First, the outer layer should be waterproof yet breathable—PUL is the gold standard. Second, the inner layer should be non-absorbent: mesh or fleece works well because it wicks moisture away from the skin without soaking up pool chemicals. Third, adjustable sizing (snaps or elastic waistbands) helps the diaper grow with your baby.

For babies who are heavy wetters or have sensitive skin, a swim diaper with a snap-in soaker pad (like those found in some Happy Camper XL Pocket diapers) can provide extra containment without bulk. However, for most pool outings, a simple cover is sufficient. The 2319-Cover is a popular choice because its wipe-clean PUL exterior and secure snaps make changing a breeze, even with wet, slippery hands.

• Avoid swim diapers with internal absorbent layers—they will swell and become uncomfortable in water.
• If your baby has eczema or allergies, choose a swim diaper made without harsh chemicals or fragrances.

How to Use Cloth Diaper Swimwear at the Pool or Beach

Using cloth diaper swimwear is simple but requires a few adjustments from your normal routine. Before heading out, put the swim diaper on your baby at home or in the locker room—it's easier than trying to wrestle a wiggly toddler on the pool deck. If you're using a cover-style swim diaper, you don't need an absorbent insert; the cover alone will contain solids. However, if your baby is prone to leaks or you're going for a long swim, you can add a thin fleece liner for extra security.

At the pool, change your baby's swim diaper every 30–60 minutes or immediately after a bowel movement. Most pools require swim diapers for babies who are not toilet-trained, even if they are wearing a regular diaper underneath. After swimming, rinse the swim diaper in cold water to remove chlorine or salt, then wring it out and store it in a wet bag until you get home. The Color Me Beach-Hanging Wet Bag is perfect for this—it has a waterproof lining and a convenient hook for hanging on a stroller or locker.

• Always carry a spare swim diaper in your diaper bag—accidents happen, and you don't want to cut your swim short.
• For beach trips, rinse the swim diaper thoroughly with fresh water as soon as possible to prevent sand and salt from damaging the PUL.

Caring for Your Cloth Swim Diapers: Washing and Storage Tips

Proper care extends the life of your cloth diaper swimwear. After each use, rinse the swim diaper in cold water to remove chlorine, salt, sand, or sunscreen. If there's a soiled diaper, flush solids down the toilet before rinsing. At home, wash swim diapers on a gentle cycle with cold water and a small amount of mild detergent—avoid bleach or fabric softener, which can damage the waterproof layer.

Hang swim diapers to dry in the shade, as direct sunlight can degrade PUL over time. Do not put them in the dryer, as high heat can melt the laminate. With proper care, a well-made swim diaper like the 2319-Cover can last through multiple children. Store clean swim diappers in a cool, dry place away from heat sources.

• Wash swim diapers separately from your regular cloth diaper stash to avoid transferring detergent residue or fabric softener.
• If you notice the PUL starting to delaminate (peeling or bubbling), it's time to replace the swim diaper.

Top Picks for Cloth Diaper Swimwear at Squishy Lil' Campers

Squishy Lil' Campers offers a variety of cloth diaper swimwear options to suit different needs and budgets. For a versatile cover that works for swim and everyday use, the 2319-Cover is a solid choice—it's made with high-quality PUL, has double leg gussets for leak protection, and comes in a fun print that kids love. If you prefer a pull-on style, the 2319-Trainer (old style) provides a snug, underwear-like fit that's easy for toddlers to pull up and down on their own.

For parents who want a complete swim diaper system, consider pairing a cover with a lightweight insert (like a bamboo fleece liner) for extra containment during long pool sessions. And don't forget a wet bag for transport—the Color Me Beach-Hanging Wet Bag keeps wet swim diapers separate from your dry clothes and doubles as a changing mat. Explore the full collection to find the perfect match for your family's water adventures.

• Measure your baby's waist and thigh circumference before ordering to ensure the best fit.
• If you're new to cloth diaper swimwear, start with one or two covers to test the waters before building a stash.

Cloth diaper swimwear is a practical, eco-friendly, and comfortable choice for babies who love the water. By choosing reusable swim diapers, you save money, reduce waste, and enjoy peace of mind knowing your little one is protected during every splash. Ready to make a splash? Explore the Color Me Beach-Hanging Wet Bag and other swim-ready essentials at Squishy Lil' Campers to gear up for your next pool day.