"Specially designed" is a phrase that implies that something has been tailored or customized according to particular requirements or needs. Some synonyms for "specially designed" include "custom-made," "tailored," "bespoke," "made-to-measure," "specifically created," "purpose-built," "engineered," "formulated," "crafted," and "manufactured for a particular use." These terms all convey the sense of careful consideration and extra effort that has gone into creating something that is uniquely fit for a particular purpose. Whether it's a piece of equipment, a piece of clothing, or a service, something that has been "specially designed" is something that has been given extra attention to detail and thoughtfully crafted to meet specific needs.