Classic bikini will give you maximum leakproof protection all day and night. Absorbs 25ml of fluid (3 Tampons)Wear for up to 12 hoursFabric: Cotton | Elastane + TPU linerAustralian owned UNDERWEAR FABRIC: Fast absorbing, durable and created to last. What makes Pelvi Undies unique is the absorbency layer runs from front to back, for full protection. Outer - Nylon & Elastane Inner - Cotton Liner - Cotton & breathable TPUTPU - Water resistant fabricSize M = Size 10-12 Size:6-88-1010-1212-1414-1616-18Hips (cm):83-8888-9393-9898-103103-108108-113SIZE GUIDE: Pelvi recommends taking your normal underwear size. Your hip measurement is the best guide when trying to find the right size underwear.