Specially developed molded foam cup give firm and secure support with a natural rounded shape while the matte simplex finish ensures a smooth profile to fit seamlessly under clothing that won't dig in at the neckline adding unwanted lines Cups have a sweetheart shaped neckline, dipping at the center from for a flattering shape with versatile wear No slip band including Sew-through boning at the back and "stay-4-show" Elastic silicone coating that is kind to the skin without slippage Removable multi-way straps with a "grab" Hook for a secure hold and connect along multiple locations along but and band provide endless possibilities as a truly convertible bra for all your fun but hard to fit necklines Multiple rows of wider spaced hooks ensure a customizable fit. 17% Nylon/Polyamide 15% Cotton 5% Elastane 63% Polyester.