1. Fabric composition: made of soft, light and smooth dry fabric nylon. In addition, the crotch is made of cotton. 2. Seamless underwear: Meet the hip's picky requirements for comfort, will not have foreign body sense, but also reduce friction in the process of exercise, can easily control a variety of materials of fabric dresses or semi-nude dresses, sweatpants or tight professional clothes, highlighting the beautiful lines of the human body. 3. Bikini tailoring: Laser tailoring with a seamless wavy edge gives a smooth look, just below the belly button. It doesn't slip, it never rolls off, it fits better. 4. Reliable and comfortable fit: Invisible cotton underwear is skin friendly, does not fade, does not fluorescence, absorbs moisture and sweats, and is thin and smooth under any clothing, giving you maximum comfort and protection. 5. Way of care: It is recommended to wash by hand in cold water, do not iron, do not use bleach. Underwear underwear is intimate clothing, it is recommended to change once every 3-4 months. Material: nylon, cottonPackage contents: 4 pieces of underwearPattern: Solid colorWaist type: mid-waist