Kink Lab Neoprene Cock Ring Small Thin. Neoprene is a light, flexible material gaining popularity in BDSM sex toys for its comfortable and easy fit. These cock rings are no exception, offering all the benefits of an enhanced erection without the weight or uncomfortable seams of their leather and metal counterparts. This small, think cock ring is 1.5 inches in diameter with a slender profile that slides on effortlessly. Designed to be worn for almost any sexual act, it can even be washed with soap and water when the fun is done! Color: Black. Type: Cock Ring. Material: Neoprene. Diameter: 1.5 inches.