S-line Anal Sex: S-line crease and fine lines. the highest level of preference among anal-masturbation design. offer even stronger tightening.Olivia is the best selling product with its perfect size for insertion.Size: 26 cm x 18 cm x 13 cm INTERNAL STRUCTUREG-spot: Stimulating structure that describe inside the aroused vagina.Narrower towards one end: The design offers greater satisfaction from deep insideRe-tightening: You can feel the five-times stronger real anal tightening than vaginal contraction in the later tightening part.The penis and head will feel even more excitement.