The Slim D, one of Doc Johnson`s® most popular shapes, has a width that is pleasurable and comfortable for most bodies and is available in both FIRMSKYN and dual density ULTRASKYN. Dual density ULTRASKYN warms to the touch and is designed with a soft exterior and firm core to emulate the feel of a real penis, while the FIRMSKYN option offers a firmer feel in a classic pleasure product material. Firmer Material for Greater Intensity Classic Doc Johnson PVC Slim Design, Lifelike Detail Suction Cup Base for Added Stability O-Ring Harness Compatible Phthalate-Free, Body-Safe Proudly Made in America Dimensions: Total Length: 6.5 in. Insertable/Usable Length: 5.5 in. Width/Diameter: 1.5 in. Circumference: 5.25 in.