Ergo Super Flexi IV Plum Purple Dong from Cloud 9 Novelties. Pro Sensual Line product SKU WTC968 Pro Sensual Ergo Super Flexi IV - Plum. UPC number 850013016358. The Ergo Super Flexi IV is a non-explicit, liquid Silicone dong with a tapered head and a smooth, flexible shaft that allows for easy and comfortable insertion wide suction cup base allows the Ergo Super Flexi IV to be used on its own or with a harness. A bonus 3 inches, 10 function rechargeable bullet can be inserted into the base for powerful, rumbling vibration. Dimensions insertion length 6.5 inches. Diameter 4.75 inches Bulk weight 7.28 ounces. Total length 7.68 inches. Categories: Vibrators, Rechargeable Vibrators, G-Spot Stimulator, G-Spot Vibrators. Restricted, Amazon Restricted. 2022.