They are super comfort and smooth satin shine soft nylon panties,silky and thick fabric make the wear great. Cute sytle double string bikinis,black edge,medium rise fit everday wear. Wash Instruction:Cool gentle wash;Don't tumble dry;Don't iron;Don't dry clean. Wash dark colours separately. Wash by hand or in a laundry bag. Satin Blend(90%Nylon 10%Spandex). Available in 6 US sizes:S,M,L,XL,XXL,3XL They are super comfort and smooth satin shine soft nylon panties,silky and thick fabric make the wear great.Cute sytle double string bikinis,black edge,medium rise fit everday wear.