The canonical sculpture of the Immaculate Conception shows a female figure in a contrapposto pose standing on a globe placed on clouds swirling with violent waves. The serpent with an apple in its mouth is the personification of evil enveloping the earthly sphere. The Virgin's left leg is bent and exposed; her head is thrown back and turned towards her left shoulder, surrounded by chaotic waves of hair gathered in a neat, smooth hairstyle. The long tunic fits the Virgin's body, echoing the figure in a graceful pose. Its soft drapery gently envelops the rounded curves of the figure with light waves of lines moving in different directions. The plasticity of the sculpture emphasises the lightness of movement and emotional expressiveness.