No, honey; they're not inclusive of hugely fat women. You are hugely fat, and that you're trying to buy a hydration vest as part of your "running" cosplay makes you an extreme outlier, because hugely fat people rarely pretend to be runners. Ragen Chastain and Anna O'Brien come to mind, but as we know, both are massive frauds (and their fitness-related content always got the lowest views of anything they did, because their deathfat followers weren't interested).
There is no viable market for hydration vests for humans sized and shaped like you, so the manufacturers don't offer them; nor are they obligated to.
I'm a woman who actually does have wide shoulders and big breasts (and a big ribcage), and I found a hydration vest that fit me with no problem—because I'm not a fucking fatty. Amazing how that works.
If she's going to insist on having a hydration vest for the events she weebles through at Anna O'Brien speeds (and you cannot tell me she's doing ultras; this is a 5K gorl; 10K at best), she's going to have to pay somebody to modify it for her with longer straps, and perhaps even shift the positioning of the straps to better accommodate her corpulence.
And of course she will whine about having to pay extra to have this done—probably a $40-75 job—but fuck her, because she's got the disposable income to participate in races and consider the purchase of specialized equipment (as well as throw away on testosterone, as well as continue to eat herself into massive obesity despite being on T). So no, I am not sympathetic; this is fat consequence.
