There are three baby bunting pumpkin costumes to choose from here, but all have their pros and cons.
The first is a plush, lined and extremely warm affair. It's perfect for those celebrating Halloween in chillier climates. The hood is attached, so there's no fear of losing it.
However, smaller infants might find themselves buried in the material. There's so much of it and it's very thick. Also, it closes with a zipper, which can get caught in the plush, unless you take care in closing it.
The middle one is a fleecy warm offering from Rubie's Costume Company. The headpiece is separate to the main bunting. A fabric fastener allows quick access to change a diaper.
I hesitated before including the final baby bunting, as it has a warning on Amazon. Apparently it contains small parts and therefore it is not fit for infants. That kind of defeats the purpose.
However, I've pored over the description and can't see what small parts could possibly be included.