Cotton and elastane are the fabrics used. Superior comfort and stretch with ultra combed cotton elastane stretch fabric. Medium coverage soft foam cushioning with a smooth finish. Padded cups provide a smooth appearance under all garments. Comfort with no wires. Smooth and soft Adjustable straps fit snugly around your shoulders and leave no traces on your skin. For all-day comfort, avoid labels. The number of hook and eye varies depending on the size band of the bra for greater support.