Meet the Isobel Rose Teen Bikini Brief, the comfy, secure period swim bottoms you can rely on to feel confident in the water during your period. Designed with built-in InnovSwim® Technology, perfect for light to moderate flow days. ✔️ Thin and discreet in-built leak-proof period protection ✔️ Comfortable & secure bikini cut ✔️ No more tampons, pads, or stress ✔️ Reusable & eco-friendly ✔️ Perfect for holidays, lap swimming, pool days Why girls love it: It means total freedom to swim on herr period. No tampons, no stress, just reliable protection, discreet comfort, and the confidence to enjoy the water, every day of the month. Sizing tip: Choose her usual underwear size. If she wears girls 14 underwear, select 14. Backed by our 30-day Happiness Guarantee. Features: Everyday comfort, bikini cut, with full bottom coverage Designed with our award-winning in built period protection, suitable for light to moderate days Ensure you have a super snug fit, no loose areas! Keep this in mind when selecting your sizing and first trying on. Select your normal underwear size. Material: 80% nylon, 20% elastane Our model is a girls size 14 Feel confident, comfortable and protected with Azure InnovSwim® Technology. Learn more about how period swimwear works.