Mark is an average sized, harness-compatible dildo made of Ultra Premium 100 percent silicone Dual Density O2 material and body he feel real. Mark features a super soft outer layer of silicone and a dense inner layer specifically designed to deliver maximum satisfaction through a realistically familiar feel. Tantus had created thicker base for added stability when used with a harness with lifelike veins on the shaft for extra pleasure. It has a slight curve for added g-spot satisfaction and features an exaggerated head with no inner core for soft yet effective stimulation. Theres nothing else on the market as realistic as Mark.