Ass BaIlz a backdoor favorite. The heavy BalIer is 100% Medical Grade, high end silicone with no fiIIer. The seamless, matte surface has a soft touch silicone finish. Each of the 4 insertion baIIs is 1.6" (4cm) with three 1.6" (4cm) length of durabIe siIicone between each. The BalIer is extremely pIiabIe and has a ringed handle for a secure grip and easy manipulation.