Stated american size S, but they run small, will fit comfortable a UK 6 or a slim 8. Spanx by Sarah Blakely Pants is your new go-to for any outfit or occasion. Thanks to magical-smoothing ponte fabric and a comfortable, pull-on design, this classic style offers a sleek look, a great butt and features a wide leg cut, making for a style so flattering, you'll wear them again and again. The secret slimming liner found in these perfect-for-travel pants keeps tummy, thighs and rear looking totally trim. Pair with a tank for a day about town or dress it up with a tucked-in blouse. Non-binding comfortable waistband. Slim-X liner reduces bulges and blemishes for a sleek polished look. Flattering cut for slimming effect. Liner fabric wicks moisture away from skin for cool, dry feel. Wrinkle resistant-great for travel.