We're talking onesie-type pjs (with or without feet) and super soft pj sets (tops and fleece bottoms)! Last year or the year before they were there and gone before I could get more than one -- and they only had them in the women's section. Just today I headed out to the regular Target and I was able to get a small men's Batman onesie (25$ - It even came with a small yellow cape that velcroes on!). I'm pretty small -- 5'2"-5'3" and 120 pounds, and the Small seemed just a tad too big on me. I saw Batman and Superman -- so if you're local to a Target and you're looking for onesies, I'd suggest checking it out!
Men's Batman Onesie with Cape:
Women's Hooded Batgirl Onesie:
Men's Superman Onesie with Cape:
Women's Supergirl Onesie: