Material: 100% Neoprene, 100% PolyesterThese "sauna sweat" shorts are designed to target your tummy control, accentuate your curves, smooth out all those unwanted lumps, and define your thighs at the same time. The polyurethane and neoprene material, helps to increase sweat and burn fat. These leggings also have 3 rows of hook and eye closures for easy tightnening adjustments.