Vibrating prostate massager is designed for targeted stimulation. The flexible shaft bends as you slide it into you, reaching for just the right spot. The ribbed texture will feel amazing. This water-resistant device is made of premium, phthalate-free silicone. Made of silicone and ABS, it measures 5 in. long, 4.05 in. insertable, 1.05 in. at largest insertable diameter. Batteries included.