Swim Diaper

$30.00 +600pts

Reusable swim diaper for kids 10-45 lbs. Features a snug fit, solid containment, and adorable prints, ensuring comfort, style, and security for water fun.

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Say goodbye to saggy swim diapers with our reusable swim diaper! Designed to contain solids and let water pass through, it provides a snug, adjustable fit for kids from 10-45 lbs. Perfect for the pool, beach, or at home, it pairs beautifully with or without a swimsuit. Adorable prints and durable snaps ensure a comfy, stylish, and secure fit as your child grows. This must-have waterproof essential is made for splashes and sunny adventures! Dive in with confidence and comfort—shop now! Fits 10-45 lbs.

Swim Diaper Infographic

100% Polyester

  1. Regular wash on warm (max. 140°F/60°C) with recommended amount of detergent.
  2. Use a reputable, commercially available detergent - Tide Original
  3. Do not use laundry soaps such as castile or coconut based soaps and detergents with fabric softener.

Inflatable Floaties Only

Inflatable Floaties Only

Designed to contain poop (of all kinds), so the only things floating in the pool are you, your kiddo, and that fabulous unicorn floaty.

Cute Prints 👌, Stains 👎

Cute Prints 👌, Stains 👎

The soft inner mesh is charcoal-colored to hide stains—even after those blueberry breakfasts. So cute prints stay cute, no matter what.

Saves Your Money & Your Sanity

Saves Your Money & Your Sanity

A reusable swim diaper that fits better, feels better, and saves you from endless disposable runs. Good for your wallet, your planet, and your beach day.

Designed for Fun (and Function)

Designed for Fun (and Function)

The SwimSaver is a reusable swim diaper that fits from 10–40 lbs and makes pool time simple. It’s made to let water pass through while keeping any surprises contained, so you can focus on the fun, not the cleanup. The dark mesh lining hides stains and feels soft and comfy against the skin, because swimming should always feel good.

Easy to Use, Easy to Love

Easy to Use, Easy to Love

No inserts, no complicated setup, just snap it on like a regular diaper and hit the water. After swimming, give it a rinse and wash it with your regular laundry (just skip the hot water). It dries fast, so it’s always ready for the next splash session. Durable, adjustable, and made to last, this diaper keeps up with every cannonball and kick.

Thoughtful Design, Honest Results

Thoughtful Design, Honest Results

Made from the same fabric as your favorite swimsuit, the SwimSaver isn’t meant to catch pee, it’s designed to handle what matters most: containing poop without ballooning up or sagging. It’s comfy, reusable, and built to fit perfectly through every stage, keeping your little one happy, confident, and pool-ready every time.

FAQ

Still have questions? Michael Phelps was going to come and talk about how much he endorses the best swim diapers but we figured we’d just get you some quick answers so you can hit the beach sooner.

Full FAQ Page

Newbie Guide

Blog

Mohammed (Lil Helper Chief Everything Officer) has spent a lot of time researching reusable swim diapers and working to find the top materials to make the best swim diapers. The outer layer is a nylon polyester blend and the inner layer is a dark mesh lining. The ingenious dark lining will hide any unfortunate stains. These are designed to allow liquids to pass through, but contain solids.

This is a reusable swim diaper. If you take the plunge (see what I did there?) on reusable swim diapers, and your baby has a poop while wearing this, we always recommend to change them and wash it before using it again. If you swim with no poops, it really depends on your comfort level, just like your swimsuit. You may want to consider whether you are swimming in a pool or lake, public or private, and if you were able to immediately hang it to dry or if you had to store it in a wetbag for a time or not.

You know your Lil Helper SwimSaver diapers have been designed for a snug fit that ensures that you, your baby, and your unicorn shaped floaty are the only ones bobbing around in the pool. While the diaper is stellar at keeping poop contained, water and pee are able to pass through. If a Swim Diaper holds pee, that means it will also soak up the water your child is swimming in - so Lil Helper designed our cloth swim diapers with your child’s comfort in mind and made our swim diapers non absorbent and breathable, allowing water (and pee) to pass through - no saggy water butts here!


Customer Reviews

Based on 191 reviews
96%
(184)
2%
(4)
1%
(2)
0%
(0)
1%
(1)
L
Lindy
The best

These are one of my favorite baby purchases. I plan to give as gifts for all the new parents in my life.

Hey Lindy!! Thank you deeply for your 5 star review of your Swim Diaper! We are delighted to read that this has been one of your favorite baby purchases! It will carry on right through toddlerhood too- we love how our one swimsuit can last for many seasons (and even more if you choose to pass it on to another kiddo after you are finished with it!) Thank you in advance for gifting our Swim Diapers to the other new parents in your life- we appreciate you spreading the word about Lil Helper! We hope that you have a swimtastic rest of your summer! - Amanda @ Lil Helper

A
Anika

Such a cute swin diaper! This is going to fit our little one for a long time. Since there's no absorbent layers or inserts, we need to button thwm tighter than the diapers, but they still fit wonderfully.

Hey there, Anika! Thank you kindly for taking the time to leave a 5 star review of your Swim Diaper. You chose such a cute print- Koi Orange is just beautiful! We hope that it brings many smiles to your little one's swim time over the next few seasons (it will fit your kiddo up to 45 lbs!) It sounds like you have found a good fit with buttoning your Swim Diaper tighter, but if you have any questions along the way about the fit (or anything else that comes to mind about our products), our Delight team would be thrilled to help. Feel free to reach out any time! Happy swimming! - Amanda @ Lil Helper

R
Rianne
Great, but fit small

I bought 2 swim diaper when my baby was 4 months old, and loved them for the first year.
They are still in great shape, lots of life left, but my 26 pound 18 months old has outgrown the leg holes. I can just barely do up the loosest snap and it leaves angry red marks on his legs.
He's not an unusually chubby baby at this point, just a solid and slightly larger than average toddler.

So overall I'd still recommend these for babies and skinny toddlers but I would not expect to use them up to 40 lbs

Hey Rianne!! Many thanks for taking the time to leave a review of your Swim Diaper! We are tickled pink reading that they worked well for your little one's first summer and that they still have lots of life left. Thank you for giving feedback on the sizing of our Swim Diaper. We will pass this along to our production team for future versions of our Swim Diaper. If you ever have any questions about fit (or anything Lil Helper related!), our Delight Team can be reached at delight@lilhelper.ca. We hope that you have a fantastic day! - Amanda @ Lil Helper

B
Briana fletcher
I like the swim diapers

These are way better then buying ones you throw out after using. And one size fits all.

Hi there, Briana! Thank you so very much for leaving a 5 star review for your Swim Diaper - Adjustable! We think it's 'splash-tastic' that you made the swap from disposable swim diapers and we are thrilled to read that you are loving how they are sized to fit your kiddo for so long! We appreciate you being a loyal customer and wish you many great pool days ahead! - Amanda @ Lil Helper

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Rebecca Wright
Swim diaper

My daughter loves this swim diaper. Her son who is only five months old already loves the water. The adjustable swim diaper will be used for many more months..

Hey Rebecca! Thank you so very much for taking the time to review your Reusable Swim Diaper! We think it is 'swim-ply' wonderful that your daughter and her son are loving the swim diaper. The adjustable sizing is great for even years if necessary! It can fit kiddos from 10-45 lbs! We hope that you have a splashy day! - Amanda @ Lil Helper

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