The body has a double layer of fabric to hug you in all the right places, but the arms only have a single layer of fabric to keep those tri’s looking svelte. The outside is TENCEL™ Lyocell fabric with a bit of Spandex and a signature 2x2 rib structure. This makes it drapey, super slimming, and insanely easy. Then, we line it with our pill-resistant MicroModal/Spandex blend (heyo, built-in Spanx). - 95% Lyocell, 5% Spandex - Standard fit - 2 x 2 rib - Size S - Wash cold, dry low