I had been searching to find one of these in my size. I looked on Amazon and E-bay, but, while they had Stitch onesies, they only carried up to a large with any seller I found. I started doing Google searches, and found a few other sites that had them, but, again, none were made for larger males. I kept looking every day for months, searching every possible relevant term I could think of that might lead me to finding a site that had them with no luck until about a month ago.
My search finally came across a site called Lucky Onesie that sold onesies for heavier adults, and they had a Stitch available. I kept and eye on the site until the first of the month came, when I knew I'd have the extra funds to be able to afford it. After checking to see that they did, in fact, have my size, and after several back and forth e-mails with them to get some questions answered, I went ahead and bought one. From the day I placed the order (8/5) to the day I got it (yesterday), it was here in ten days. I was surprised, when first ordering it, that it was going to arrive that soon, because it was coming from overseas, and most stuff like that takes twice as long, but even their site states that's roughly the time it takes.
When I finally brought it home and put it on, I have to admit I was extremely happy. I had nearly given up hope I'd find one, but now I not only have one, but I know a site I can go to should I want to find or buy another in the future.
The only downside to it right now is, because of the weather and the material it's made with, it was far too hot to wear for very long. At least, when it gets cooler, I'll have something cozy to wear around the house.