Fruitloop, I have one that is 3.5 and she naps on a sleep mat in the playroom, the others (almost 3, 2, 2, 1) are are in pnp's, the 3.5 will start full day jk in sept, so I will be looking for a replacement in the fall at which time I will transition the just turned 3 yr old to a nap mat to free up a pnp.