From Crazy 8:
Ribbed waistband. B hates jeans because of the stiffness/bulkiness around his waist. SIL bought him some like this from Crazy 8 (non-cargo) a couple months ago. He wore them over the weekend and loved them.
(these are boy sizes...but they do have them in baby boy also)
Re: Great find if your DS hates jeans.
77kids (AE's kids' clothes) has had similar pants in the past, as well.
I always buy a few pairs like this - usually from 77kids b/c they fit Jack better (gymbo corp pants run too wide for him) - b/c they are great for school for him and he doesn't fight me on wearing them.