Cast from 100% platinum-grade silicone, soft yet firm enough to register throughout wear. Small size: 5 inches long, 1.75-3 inches wide, 9-inch largest usable circumference, 11.6oz. Body-safe, non-porous, phthalate-free. Compatible with water-based, hybrid, and oil-based lubricant (not silicone); dishwasher safe.