High Waisted Underwear for Women: Elastic 33inch wide (Size S) double-layer waistband with full coverage. The high rise brief go up to waistline and provide moderate tummy support to smooth belly and reduce muffin top. You can use as regular underwear, also use as postpartum underwear and c section underwear. These nylon panties has minimal irritation to the skin and incision scars. Seamless Underwear for Women: 90% Nylon 10% Spandex body 100% Cotton crotch. Nylon has the advantages of being strong, not easy to deform and not easy to fade; 10% Spandex makes the brief have better resilience. To enhance the tummy control in the waist, specifically use reinforced stitching instead of glue or laser cut. Therefore, THE BOTH SIDES OF WAIST IS NOT COMPLETELY SEAMLESS. But you also can't see the panty line on the butt. Panties for Women Pack: Full coverage women's underwear cover your butt/rear completely, up design nicely shows the hip, no saggy, no wedgies. The leg openings have a seamless laser cut that won't cut into the thigh area and won't pinch in the butt area. No feeling label, no skin irritation or skin allergy for our seamless high waisted underwear. Washing Care&C Section Underwear: It would hold to a lot of washing because of the fact that it is sewn in instead of glued on. You can wash on warm or cool, and dry with low heat! FINETOO recommends that you replace your underwear once a month to protect your private health.