Siluet TFT Thong Style Braless Body ShaperGently Shapes and defines the silhouette. Adjustable straps. Closure in the crotch for better comfort. Bra not included. Composition: Polyamide 82%, Elastane 18% Refer to size chart to ensure you choose the correct size. Please note that the most accurate way to find your size is by: Your contour: measure your under bust contour. Your natural waistline: measured three fingers above your belly button. Your hips: The fullest part of the hip and buttock.