PRETTY LOVE BI-014626 Made of medical-grade liquid silicone and zinc alloy material,18k gold plated Pretty Love-Liberators is a series of luxury novelty products.We independently developed medical-grade liquid silicone, bringing customers realistic touch.Smart memory function will always make it automatically stick to your favorite settings whenever you use it.Portable charger and low-noise design allow you to use it anywhere.Pretty Love-Liberators' IPX7 waterproof design makes it easy to clean.