I don't want a traditional onesie with the folded neckline. I am looking for a long sleeve tshirt, polo, or oxford to put under some overalls for DS. Size 3-6. I have tried Kohl's, Target, Carter's, and Old Navy with NO luck. Who would've thought this would be so hard to find?!
Re: Plain white long sleeve shirt onesie for boys?
I just checked and Gap has a bunch on sale. I always hated the dumb little bear on them though.
https://www.gap.com/browse/category.do?cid=7139
Here's a pocket t-shirt without the next extension.
https://www.gap.com/browse/product.do?cid=7139&pid=579458
Baby Gap has infant oxford onsie shirts, Lands end has more of a polo-type
https://www.landsend.com/pp/CollarBodysuit-68540_174859_-1.html?CM_MERCH=PGGT_0000040550