My daughter was potty trained in 2 weeks using these training pants.  Will not hold a "full" accident, but did contain a small one.  I like (and I assume she does as well) the little extra cushion in the pants as a transition between diapers and regular underwear.  They do run a little small, especially after a wash and dry.  She weighs 26 pounds and the 2Ts fit snuggly.  My only complaint is that I found them cheaper at a local (well known) store after I purchased online.