All of the pajamas shown do not have a drawstring. The ones with the rounded neck are just plain which it didn’t matter to me because I’ve bought them large so I could just throw them in the wash and dryer. they do say do not put it in the dryer, but I wanted them to shrink a little anyway and I put it under low heat. Now I like large pajamas when I’m sleeping I’m a size 12 in a pant but that’s just my preference. Plus I do not like to worry about things shrinking they are nice quality, I do like the one with the V-neck and the drawstring I think slightly better mainly because of the drawstring and I can tighten it. They are long enough I’m 5 foot two so I can roll the waist a little so they don’t fall right off me I could easily put a drawstring in wouldn’t be very hard .