The Basics A Corset Extender that gives you a little extra breathing room when you need it. The Benefits Can be used on any 10, 11, 12 and 13 hook corsets. The Advantages Unlike 'elastic' extenders, this one wIll not lose elasticity, turn yellow, and become brittle in the washer and dryer. The Pro Tip To be used for a 10, 11 or 12 hook corset, simply cut on the heat seal line for a 'no fray' result. The Specs Made from 100% soft brushed nylon. Hook color: White, Ivory, or Black