This Gore(TM) women's tank top has a built-in support bra to give you a confidence boost. Mesh insert in the back for cooling and breathability. - Ventilation tape is also used to increase airflow. Back pocket for race day essentials. Built-in support bra. - Rubber elastic band is wide with soft rubber for comfort. - Bustier platform to support a larger chest. Baby doll-like style tank top. - Wider bottom so it can be worn with baggy running shorts. The back and shoulders have reflective print for visibility. Slim fit. Flat-lock seams for comfort. Screened logo on the front. Top: 91% Nylon / 9% Elastane. Inner Bra: 66% Nylon / 34% Elastane. Mesh: 94% Nylon / 6% Elastane. Imported. About GORE: Gore Bike Wear(TM) uses multiple technologies to create some of the most efficient and comfortable bike gear. With Gore-Tex fabrics, your bicycle gear is waterproof, windproof and breathable. The Gore Windstopper fabrics keep you comfortable in spite of the weather. In addition to these new technologies, Gore also uses 15 other types of materials so they can find the perfect combination of materials that will keep cyclists comfortable and ready for the road. With their selected fabrics, there is Gore bike clothing for compression, thermoregulation, moisture management and cooling and venting. Among there many bike gear products, they carry Gore bike gloves, Gore cycling jerseys, Gore cycling bib shorts, Gore cycling shorts and Gore arm warmers. As new technology is created and more research is done Gore continues to improve. To help their cycling gear advance, Gore also studies athletes in action. When the athletes are done cycling and running, Gore even interviews them to be as thorough as possible. Gore keeps its focus on what's most important: The athlete.