Menvault Incontinence Briefs Review

I thought I’d post a quick review of Menvault’s protective briefs (for bladder leakage) in case anyone has seen their ads and was thinking about buying them.

The ads make assertions that the briefs can hold 300ml of liquid, and that they can be worn for up to 12 hours, offering all-day support, and that they fit and look like normal briefs. They also promise that their material dries fast so your dangly bits stay dry as well, and that they lock in odors, among other things.

They’re a bit on the pricey side, but by buying four pair and using a discount code, I got them for just over $90US, including shipping. As I’ve always worn size L briefs, that’s what I ordered.

The results:
I began wearing these about four months after my catheter was removed (RP surgery in January 2026). At that point, I was still incontinent, but had some control, meaning I could make it to a bathroom as long as I had the urge to go, but standing for long periods, I would generally leak a little here and a little there, plus the usual nagging stress incontinence.

They’re made out of some sort of bamboo hybrid fabric that definitely doesn’t feel like cotton, but better than something like nylon or spandex. They have layers of absorbent padding in the expected front area, as well as some patches around the leg openings and a bit at the back. The front padding is actually two pieces sewn in at the top and bottom, allowing an included extra pad to be inserted to obtain the advertised 300ml absorbency over 12+ hours.

I put them to the test during a local grocery run. Everything seemed fine at first, they fit tight, they generally looked ok from the outside, though they do feel about the same as a Depends pull-up in bulkiness. To the store!

I’d already had some minor leaking before arriving at the store, and once inside, I continued to leak in spurts, as I usually do when walking and stretching for things, lifting things into the cart and all that. No problem, I don’t get anywhere near 300ml in a short shopping trip.

About 15 minutes later, I began to feel…squishy. I felt like I’d peed my pants, but nothing had soaked through, like it was all contained inside my pants. You ever see those goldfish they have at county fairs, just floating in a little plastic baggie? That’s how my privates felt, completely submerged.

Ok…well at least they’re not showing through…

Then the dam broke. All of a sudden, I had a major stream down my right leg, and my entire backside was flooded. Well, crap!

Four months into my new PCa life, and I had my first public leaking, wearing a pair of expensive protective briefs that were supposed to prevent that.

Skedaddled home (sorry, had to leave the cart!), got out of them and immediately weighed them against a clean pair.

112ml. Wha…? They’re supposed to hold 300ml! And over 12 hours! I’ve had these on for just two hours!

I tried another pair the next day, just around the house, and again, right at the 2-hour point, leakage right through to my pants, and weighing showed about 130ml. Third pair, more leakage after a couple of hours, and I’d managed to get up around 150ml, still well shy of the claimed 300ml.

I emailed their customer support, and they were very responsive. The rep apologized, and also worked with me to diagnose the problem, having me fill out several questions on a form about the nature of my leaks, where they occurred, and all that.

After reviewing my answers, my rep determined that my issue was likely poor fit, and that I’d do better with size M, as the briefs are meant to fit very, very tightly, to keep the floating additional pad in place. With size L, the thought was that the fit was just loose enough to allow it to slip out of place, then bunch up at the bottom of the briefs, allowing for the leg and butt leaks.

Generously, they agreed to replace my L’s with M’s, and let me keep the L’s as backups or overnight briefs, as underwear can’t be returned. I agreed to that.

I got my size M’s a few days later, then tested those. They did better at containing leaks, no massive soak-through, but they did still allow some visible leaks. After two hours, I had some nickel, dime, and pea-sized leaks down one leg, and two half-dollar spots on my backside, one on each cheek.

Weighing again showed they were failing at the same spot; 2-3 hours in, with around 110ml-170ml of liquid.

I followed up with them, and that’s when I got the full scoop, and I want to point out that while I’m paraphrasing, what follows is what they told me, not my opinion.

What they said at that point was that yes, the briefs will hold 300ml of fluid, but that’s in their controlled lab. In the real world, they can fail at a lower threshold, mainly due to a person leaking faster than the briefs can absorb. In that situation, they can become overwhelmed and fail sooner.

Personally, I think peeing out 120ml over two hours isn’t something that should be overwhelming for a product that says it can handle 300ml and can be worn for 12+ hours, but I’m also not in the protective briefs business, but for me, practically speaking, these are a failure for anyone exhibiting anything but the lightest of drips and dribbles over a very long period. Even moderate leaking will defeat these.

End of the story…I was within my 30 days, so I may have been able to get my money back, but I didn’t push it. Instead, I’m saving these for the future, when I expect to have better bladder control, maybe a time when all I’m dealing with is minor stress incontinence. But for now…into the drawer with these.

I will give high marks to their customer service - very responsive and willing to work out a solution, and considering I now have eight pairs that should eventually work out for me, the price bite isn’t nearly as bad.

TLDR: They don’t really work as advertised unless you’re the absolute lightest of leakers, but they have excellent customer service.