82% Polyamide / 18% Elastane Imported Simple Practial:A simple but professional one-piece swimwear.Fit for lap swimming,open water,bathing,competition,exercise classes,water aerobics or ballet or gym, and so on. (1).High elastic fabric, provides a body hugging fit,great shape retention,slimming,soft comfort.(2).Y type racerback,provide stable and ideal fix,won't bind or gap.(3)Moderate cut leg,reduce water resistance and provide enough body coverage. Durable:Chlorine resistant ,Dry quickly,Excellent workmanship.Can be used for a long time.Built in thin and soft pads for coverage,very comfortable. Complete range of sizes:From 2 extra small to plus large size.Fit to big girl,teen,youth,lady...almost any age group. Size chart(LASTEST UPDATE from 2017-01-01): About the detail of size info, please follow the last image on the left or the Product Description and please know your body measurement to buy a perfect fit.