EcoDim tummy toning knickers. Designed to tone the tum. Lace on the sides. Microfibre at the back. Cotton-lined gusset. These knickers are made from microfibre and are invisible under your clothing. They offer control for a toning effect. Fabric content: 82% polyamide, 18% elastane. Please refer to the care instructions on the product label. OEKO-TEX® Standard 100. Standard 100 certification by OEKO-TEX® tests textile products for harmful substances via an independent, international label.