What is the fine-grained topic of the following text: Prairie Underground chooses materials such as domestically grown organic cotton ﬂeece and jersey, as well as hemp and denim all in overdyed and lush colors, Eckersley and Lindner make clothes that can be worn with high heels or Converse high tops, adding details that combine both masculine and feminine design elements. Only return the topic.
Prairie Underground's choice of materials and design elements in clothing production