Black Adult Snapsuit

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J black onesie
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This Snapsuit with an all-black design looks just like an ordinary T-shirt, but provides full, discreet coverage and noise reduction. It’s perfect for providing support and holding everything in place!


This comfortable Snapsuit is made with cotton/spandex giving it a great stretchy feel while keeping it as soft as cotton. 


Our Snapsuits give a tight, discreet fit while helping smooth lines and holding diapers/pads in place without the fear of shifting or sagging. Features a metal snap crotch with 4 snaps.


Fits similar to a standard female T-shirt sizing (size up one size if you are used to male sizing). This Snapsuit can stretch up to a few inches longer than listed below and can shrink up to 15% after washing.


Size Chart
Size Chest Length
XS 28" 26"
Small 30" 28.5"
Medium 34" 32"
Large 36" 34.5"
XL 42" 36.5"
2XL 45" 38.75"
3XL 50" 40.75"
4XL 57 44.5"


Made with 95% cotton and 5% spandex

22 Reviews Hide Reviews Show Reviews

  • 5
    Adult snapsuit

    Posted by Jack C. on 2021 Sep 3rd

    Quality material, plenty of stretch. There is a bit of shrinkage so I advise ordering one size up. I normally am on small side of medium and ordered a large and I love the fit. So far it appears to be color fast as I got the black. I will be getting more in the future.

  • 5
    Black Adult Snapsuit

    Posted by Jay on 2021 Jun 14th

    If you wear diapers during the day, these "diaper shirts" are a game-changer. Never worry about waistline diaper peek-a-boo's again, and, they also control sagging. These should be legally required for plumbers everywhere. The Rearz version is comfy, well-made and the snaps are tenacious.

  • 5
    Ordered at my normal t-shirt size and fits perfectly

    Posted by Dalton Free on 2021 May 30th

    Definitely recommended

  • 3

    Posted by Ashley P. on 2021 May 19th

    Material was thinner than expected.

  • 5

    Posted by Pat on 2021 Apr 22nd

    Super stretchy. Holds my brief close and snug. My briefs are hidden now when I bend over. Also makes my brief discreet under my pants. It's perfect. Helps with the heat in the summer. Sweat goes onto the the onesie instead of the shirt I'm wearing. Definitely recommend for people that want to hide their protection.

  • 5

    Posted by Shane on 2021 Apr 15th

    For all the products out in the market place to date, these are the best quality and fits as per the description, real comfort.

  • 5
    onesie bodysuit

    Posted by nolan on 2021 Feb 13th

    good fit for a tall slim guy. works well with and without a diaper

  • 5

    Posted by Tim on 2021 Jan 4th

    Fit is great

  • 5

    Posted by Jay on 2021 Jan 1st

    If you wear diapers away from home, a onesie is an indispensable part of your wardrobe, eradicating concerns about waistline diaper exposure. They also muffle crinkling and hold everything in place.