I just ordered these for my youngest, but my six year old has been wearing them for over a year. The pants fit pretty big, but it doesnt bother her and they will last longer. My daughter wears them several times a month for field study at school and particularly raining/muddy recess. They go out rain or shine and the playground is a natural environment with lots of mud. She gets in and out of them easily on her own and wears them comfortably on hikes over her clothes. They haven't failed her, even sitting right in the mud. The pants wash easily, and are not snagged or worn despite rough treatment. Great purchase!