Large capacity 310ml with eight recessed water jets for faster cleanup. The nozzle is a very flexible silicone material with offset jets to enable a free flow of fluid. The flattened base on the bulb provides a substantial platform to stand the bulk upright as well. Can be safely cleaned in the dishwasher, and can be lubricated with water-based lubricants. DO NOT use silicone lubricants as they will destroy the medical-grade material.