This Reebok Women's Biker has a really stretchy waistband that supports your tummy. Designed in a material that wicks away perspiration, it allows you to stay cool and dry for a long time. Its seamless design offers a second-skin effect. Features: -Fitted cut -Speedwick technology that wicks away perspiration to keep you cool and dry -Very stretchy material< br />-Stomach band Composition: 80% nylon / 20% elastane