Articulated skeletons and internal structures have also advanced considerably. Early sex dolls lacked mobility and realism in posing, often limited to static positions. Now, high-end sex dolls come equipped with stainless steel or alloy skeletons that allow full-body articulation. This includes movable joints in the fingers, elbows, hips, and knees, and in some models, even spine and neck movement. Such flexibility enhances realism, enabling dolls to be positioned naturally for photography, companionship, or intimate use. The ability to mimic human postures brings a stronger emotional dimension, contributing to a more immersive and personal experience.