I bought these for my 9 year old just in case. I was 10 when I first started mine and we're on holiday soon so I didn't want to be away and unprepared. She's tall and skinny and I got these unsure if they'd fit because it said for preteens but with being so young I'm glad I bought them. They definitely have room so she could grow more and they'd be fine but there wasn't any gaps that could leak out which was my main concern. The material is lovely, my daughter said they were comfortable and she was very happy with them which is the main thing. I know when it does come I'll be ordering more but for now it's peace of mind.
I really do love my pink period pants. They are comfortable and practical. I have bought many pairs of the midi briefs now, in lots of different colours.