These are great. We bought these for my 3 y.o. son who is allergic to synthetics fibers.  He weighs 35 lbs. and the 2T-3T still fits him great.  We also ordered the next size up for fear they will be discontinued before he gets that big. Finding "big Boy" undies with a cotton covered waistband is nearly impossible in this size. These are great because they fit nicely, have a cotton covered waistband, and they are all cotton.  Hope they never go out of production.