The evolution of female sex dolls has increasingly emphasized realistic body movements and flexibility to enhance user experience. Advanced joint systems, including articulated skeletons made from durable yet flexible materials, allow the dolls to perform natural poses and movements. These joints are designed to mimic human biomechanics, enabling a wide range of motion such as sitting, bending, and embracing without compromising stability. High-quality internal frameworks often feature multi-directional joints that respond seamlessly to user manipulation, providing a lifelike sense of weight and balance. Additionally, some dolls are equipped with flexible limbs and torsos made from specially engineered TPE or silicone that stretch and bend naturally, allowing for more dynamic interactions. This flexibility is crucial for achieving realistic positions during intimacy or posing the doll for display purposes. Manufacturers also incorporate ergonomic enhancements, such as adjustable joints and removable limbs, to facilitate easier customization and maintenance. The goal is to create a doll that not only looks authentic but also moves convincingly, boosting emotional engagement and satisfaction. As technology advances, innovations like motorized joints and sensors are being integrated to enable even more fluid and autonomous movements, bringing these dolls closer to mimicking human behavior. The result is a more natural, comfortable, and immersive experience that caters to diverse preferences and needs.