Mamba Cock Sheath Black Penis Extension. This lifelike penis extender aims to satisfy both you and your partner by providing increased size as well as a prolonged erection, great for lengthy sessions. Simply insert the penis into the comfortable, hollow shaft, and then pull the testicles through the base ring. The inside of the hollow shaft has exciting sensation nodes, for stimulation for the wearer. Entice them with a larger, longer lasing erection, for unending pleasure and over the edge climaxes. Measurements 6.5 inches insertable length, 2 inches in diameter at widest point, inner opening measures 1.5 inches in diameter. Material Thermoplastic Rubber TPR. Color Black.