My daughter is only just 10 and has struggled with starting her periods before all her friends. She was struggling with towels but has found WUKA so much easier. So far they’ve been discreet and very effective with no leaks. She’s been using the heavy flow pants but tends to change half way through the day at school to feel more secure. If it’s not too heavy, she could probably get through a school day with one pair without leaks. We ordered both the smaller and larger size, but the 2xs-s was too small. She’s tall for her age and physically more like an early teen with a slim athletic build. Tends to wear 13-14 kids’ size in normal pants, and the larger size teen WUKAs are perfect. Not too tight, but tight enough to be effective, and because they’re so stretchy they will continue fitting as she grows. We’ve just ordered more! The price feels a little high at first, but I think in the long run will be cost effective. We’re going to try the swimming costume for school swimming next.