The front zipper makes it easy to put on. It has an elegant design. The lining is 100% cotton with antibacterial and deodorizing treatment, making it a skin-friendly inner layer. It stretches and contracts moderately, making it less likely to feel tight or cause stiff shoulders. Includes a correction pad. Materials: Outer: 90% Nylon, 10% Polyurethane Lining: 100% Cotton Sizes: S: Top Bust approx. 72cm - 80cm M: Top Bust approx. 79cm - 87cm L: Top Bust approx. 86cm - 94cm LL: Top Bust approx. 93cm - 101cm 3L: Top Bust approx. 100cm - 108cm 4L: Top Bust approx. 107cm - 115cm 5L: Top Bust approx. 114cm - 122cm *This product does not specify underbust measurements.