SPANX Women's Undie-Tectable Lace Thong Body 78% Nylon 22% Spandex. Lace 80% Nylon 20% Spandex. Gusset 100% Cotton73% Polyamide Imported Machine Washable 78% nylon/22% spandex 80% nylon/20% spandex 100% cotton Wash cold