Bra allows the wearer to use the tighter hooks as the bra stretches during its lifetime. Bras may be designed to enhance a woman's breast size, or to create cleavage, or for other aesthetic, fashion or more practical considerations. Nursing bras are designed to aid breast-feeding. Compression bras, such as sports bras, push against and minimize breast movement, whereas encapsulation bras have cups for support. Breast support may be built into some swimsuits, camisoles and dresses. Bras come in a variety of styles, including backless, balconette, convertible, shelf, full cup, demi-cup, minimizing, padded, plunge, posture, push-up, racerback, sheer, strapless, T-shirt, underwire,
Shelf registration nature, shelf offerings are examined far less rigorously by those authorities than standard public offerings. Shelf registration is a process authorized by the U.S. Securities and Exchange Commission under Rule 415 that allows a single registration document to be filed by a company that permits the issuance of multiple securities. Form S-3 issuers may use shelf registration to register securities that will be offered on an immediate, continuous or delayed basis. In July 2005 the SEC put "automatic registration" shelf filings in place. This filing is a relaxed registration process that applies to well-known, seasoned issuers (WKSI, pronounced "wiksy"), and