Big-bust sex dolls differ significantly from traditional dolls in purpose, design, and functionality. While traditional dolls are often designed as collectibles, decorative items, or toys without explicit sexual intent, big-bust sex dolls are specifically created for adult intimacy and companionship. The primary difference lies in their anatomical accuracy; sex dolls feature realistic body proportions, movable joints, and detailed facial features intended to mimic human appearance and enable sexual activity. They are made from high-quality, body-safe materials like silicone or TPE to simulate the feel of real skin. Traditional dolls, on the other hand, are typically made from rigid plastics or porcelain, lacking flexibility and realistic features. Functionality is another key distinction—sex dolls often include features such as heating systems, sound modules, and customizable appearances to enhance realism and interaction. Maintenance and usage are also different; sex dolls require regular cleaning and careful storage, whereas traditional dolls are generally for display or collection. Overall, big-bust sex dolls are purpose-built for adult intimacy and personal satisfaction, offering a more immersive and realistic experience compared to traditional dolls, which are primarily for aesthetic or collectible purposes.