Created with dual-density Sensa Feel technology, Axiom replicates natural flexibility, pliability and texture. The ratio of firm inner core to soft outer layer was selected to create the most accurate representation of a perfect erection. With a lifelike form and powerful suction cup, the PVC Axiom has a flexible internal spine for added rigidity. Measurements are 7 in. long, 5 in. insertable, 1.75 in. wide.