Mark is an average sized. harness compatible dildo made of Tantus' Ultra Premium 100% Silicone Dual Density O2 material and boy does 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. We have created a 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 for effective stimulation. There is nothing else on the market that feels as realistic as Mark. Safe for your body made from Tantus own unique formula of 100% Ultra Premium Silicone. Easy to clean. Eco-friendly. Hypoallergenic. hygienic. boilable. bleachable and dishwasher safe. Maximum diameter 1.6 inches at shaft. 1.4 inches at head. total length 6.25 inches.