With the SMARTBALL UNO strengthening your pelvic muscles is as easy as pie. The internal weighted ball moves with every step you take gently stimulating your muscles. No effort required – just a stronger pelvic floor more intense orgasms and better control over your pleasure. Stronger deeper more intense – your pelvic floor workout starts now!Its ergonomic shape and tapered tip allow for easy insertion while its light weight of 1.4 oz makes it the perfect pelvic floor trainer for beginners. Whether you're out for a walk going about your daily routine or adding an extra thrill to a spanking – every movement becomes a sensual delight. Waterproof (IPX7) and made from body-friendly silicone the SMARTBALL UNO is always ready when you are! Enjoy long-lasting quality backed by FUN FACTORY’s impressive 25-year warranty.