Meet Jo, the new addition to your relationship! System Jo Anal Personal Lubricant Warming is made with Silicone. The lubricant comes in a 4.5-ounce bottle with push top lid. The lube warms to the touch making any situation that much hotter. Jo is formulated to last long and never leave a sticky feeling behind. With U.S. FDA regulations backing Jo, you know it is safe. Slide into something amazing!