The material of this underwear is soft and smooth. My 4 year old wears a size 5 which fits him but a size 6 would also fit. Fit well, leaving some room to grow when he tried them on. After several cold water washes and medium tumble drying, they shrank to about the size of his old baby underwear size 4. Overall I'd say they're great for comfort and style (funny prints!) but make sure you have two Buy sizes bigger than you think.
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