95% cotton 5% SpandexMachine wash in cold water with same colors, no bleach, line dryStretched waist and comfortable95% cotton 5% SpandexMachine wash in cold water with same colors, no bleach, tumble dryStretched waist and comfortableComfortable basic cotton thongs, durable, and attractive to wear every day.If your size is between two sizes it would be better to order a size down.You will feel a well-made of panties, they are with no visible lines and a seamless look under her pants and leggings.