What's the difference between the JY Dolls' old and new skeleton? July 14, 2019 13:44 The new skeleton can shrug the shoulder and gears are added to the joint position. BACK TO SEX DOLL GENIE Related articles What's the life span of the dolls? EVO skeleton (shrugging shoulders) for WM and YL dolls. What doll brands have anatomically correct holes? Difference between shrugging and standard shoulders? Do you have dolls with stainless skeleton?