This sports bra features thin shoulder straps, a back detail with straps and a stretchy material. NA-KD Reborn features our most sustainable pieces. This product is made from certified, more sustainable materials, which means that it\'s better than those containing conventional materials. Products labelled \"More Sustainable\" on our website, are both made of a more sustainable materials and created in factories that participate in our Environmental Performance Improvement Program, using the Higg Index. They are also fulfilling our social requirements by: signing our Code of Conduct, performing a social audit and continuously improving working conditions.