trusty trunks

Truly Leakproof!

Avoid embarrassing accidents swim diaper

Trusty Trunks are worn over any regular diaper, water stays out and all messes stay in!


TrustyTrunks, are the ONLY swim diaper that hold in both solids and liquids. Wear over a regular, absorbent, cloth or disposable diaper or training pants so messes stay in and pool water stays out. Made from super stretchy skin-safe silicone, TrustyTrunks form a comfortable seal at baby's waist and legs. Our leakproof technology is patent pending. What happens in the diaper STAYS in the diaper.

Trusty Trunks in Action!

Watch how super stretchy Trusty Trunks fit to form a leakproof seal at baby's waist and legs, while allowing baby to bend, move and splash comfortably! Click arrow to play video.

As seen in:

trusty trunks

Benefits of TrustyTrunks

Comfortable fit

TrustyTrunks leakproof diaper covers are soft and gentle on your baby’s skin. The elastic silicone provides a form-fitting airtight seal that keeps your child’s diaper protected without constricting their movement.


TrustyTrunks 100% silicone diaper covers are reusable and washable for an entire season. You can simply wipe clean or put in the washing machine. Pat dry and your TrustyTrunks are ready for the next beach day. 

Sand protection

TrustyTrunks keep sand, seaweed, and other uncomfortable beach debris from your child’s diaper. They can swim and play all day, but with proper fitting of the TrustyTrunks, they’ll stay clean no matter what.

No leaks

TrustyTrunks are the only waterproof and leakproof swim diaper on the market. With a proper fit, everything inside the diaper will stay in, and water or sand from the beach and pool will stay out.


Couldn't get the size 1, but size 2 kept a good enough seal on my breastfed baby so her waste product stayed put. I put on her before we go, easily dry her off, and bring her home for a diaper change without her freezing or her suit soaking the car seat. Perfect trunks for any baby, as they stretch easily to fit.

– Karen, verified purchaser on Amazon

We were just at an indoor waterparkwhere a little boy pooped in a play structure. They shut the whole pool down for hours. He was wearing a swim diaper, but it just kinda' fell out.

– Destiny, a mom from Tacoma

Our community had so many pool closures this season we are seriously considering the implementation of fines for pool contaminations.

– Ken Gibbs, homeowner in Hilton Head Plantation, South Carolina

Esta muy bueno hay que tener cuidado que no se raje !!!

– Maximilliano, verified purchaser on Amazon

Thank you for everything! I have and will continue to tell people how amazing you're product is and my family thanks you from the bottom of our hearts for this product! no more embarrassing pool incidents :)

– Chelby Sgarlata, Pensacola, Florida

During the summer,we have one to two poos in the pool every week.

– Acquatics director at a health club facility

trusty trunks

Our Mission

We believe in making life less stressful.

TrustyTrunks are a leakproof, waterproof, sand-proof, reusable swim diaper. Worn over a cloth or disposable diaper, it is the only product designed to prevent liquids from leaking out.

The vision for TrustyTrunks is to change our culture so there are fewer pool contaminations. We strive for cleaner, safer, recreational water and fewer pool closings.

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trusty trunks

Wearing Instructions

Follow these instructions so that TrustyTrunks are 100% leakproof:

1. Pull the legs all the way up into the crotch, so there is no EMPTY SPACE in the crotch

2. Pull TrustyTrunks way up over belly button. For disposable diapers, tuck the NON-ABSORBENT, flappy part of the diaper in.

3. Make sure there are AT LEAST two inches of silicone to skin contact at the top.

4. Smooth out the waistband and legs so that there are no rolls or folds.

trusty trunks

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