One aspect of the present disclosure relates to an implantable penile prosthesis including an elongated cylinder that includes a pendulous portion configured to move from a non-pressurized state to a pressurized state. A tapered tailoring portion of the elongated cylinder is configured to anchor the elongated cylinder at a base of the penis. The elongated cylinder further includes a flared reservoir portion, at least a portion of which has a diameter that is greater than a diameter of the pendulous portion.