Got the product today (very quick delivery).  Right out of the box, they look big...however, I wanted them big anyway because things shrink so much in the wash when it comes to kids clothes.  My son loves Superman so I think we will get much use out of this product.  The material seems pretty durable...a little worried about the underwear not fitting because my son is very skinny...he's only 2 1/2 yrs old but he is very tall for his age...already 36 inches.  I don't mind if the undies don't fit for now...we'll use them later if we have to.  It's a cute set.  We like it.  Thanks for the quick delivery Amazon...two days!