Lil' Monsters Adult Snapsuit

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Bring the Lil’ Monsters crew along with you! Featuring Draco the Dragon, Puffy the Pink puffball, Unicrest the Three Eyed Dino, Midnight (Blue) & Twinkle (Purple).


This super cute and comfortable Snapsuit is made with cotton/spandex 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 full snap front and crotch.


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 27" 26"
Small 31" 28"
Medium 32" 31"
Large 36" 32"
XL 42" 33"
2XL 46" 35"
3XL 50" 37"
4XL 54" 39"


Made with 95% cotton and 5% spandex

24 Reviews Hide Reviews Show Reviews

  • 4

    Posted by Troy Liebert on 2021 May 20th


  • 5
    Great diaper matching onesie

    Posted by Blue Davis on 2021 May 17th

    This is a great diaper matching onesie. The size does run one size small as most have commented. Does a wonderful job of keeping diapers in place, smoothing out diaper lines and is extremely comfortable. I use these for nighttime. Helps keep diaper firm against skin to prevent leaks when tossing and turning through the night. I highly recommend getting the onesie that matches your diaper.

  • 4
    Lil' Monsters Adult Snapsuit

    Posted by Darrel on 2021 May 15th

    Love the product. Comfortable to wear.

  • 5
    lil monsters snapsuit

    Posted by bug on 2021 May 13th

    i love it so much so cosy light so you can wear all the time

  • 5
    Lil' Monster Adult Snap Suit

    Posted by R.D. on 2021 May 13th

    I am very happy with the fit and design of this onesie.

  • 5
    Lil' Monsters Adult Snapsuit

    Posted by Patrick F. on 2021 May 3rd

    Couldn’t be happier thanks again team rearz

  • 5
    Adult baby onesie

    Posted by Daniel on 2021 Feb 11th

    Love the pattern my cloth diapers and plastic pants keep diaper in place when I am wet I recommend a size up I got xl .

  • 5

    Posted by Jemmy on 2020 Aug 27th

    It's so soft! I'm 6'5", and the large is just a tad bit tight, but I love it like that!

  • 5
    lil monster full snap onesie

    Posted by Brad Taylor on 2020 Jul 21st

    Exactly what I was hoping for. Love the feel and comfort. Love the look. Snaps seem secure.