Adorably smooth! This waterproof velvety Silicone massager is 4.5" long with a diameter of 1.25". Little Dolly is very smooth with a lot of flexibility. Dolly can give an intense pleasure both internal and external. There is an easy pop open bottom for placement of two AAA size batteries, not included. With a slide of the finger, you can adjust the vibration to your speed preference. Little Dolly has a sample packet of lube included for your convenience. No need to worry about forgetting your mini on the nightstand, not likely anyone will guess what it is!