Sometimes, what people refer to as onesies are actually long johns. The only difference being that onesies have feet and long johns don’t. Other than that, they are both basically long underwear. Most adults prefer the footless kind, but many do like the footed models. Your choice depends on whether you are looking for cuteness or practicality. Footless or not, onesies are often unisex, and matching onesies for a man and a woman make for a cute couple outfit.
Onesies for adults:
Onesies for adults example. Pictured: Carhartt Men’s Midweight Cotton Union Suit
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