opera sport1.1 Raw Materials Since the first collection, OpéraSPORT has incorporated materials made from industrial waste along with certified organic cotton. Each material is chosen based on its look, quality, and performance. Recycled silk,1.1 Raw Materials Since the first collection, OpéraSPORT has incorporated materials made from industrial waste along with certified organic cotton. Each material is chosen based on its look, quality, and performance. Recycled silk,