The Blue Aneros Prelude™ Enema Bulb Kit is our internal cleansing system created to support ZERO - The End of Prostate Cancer. Ideal before an Aneros prostate massager session the special slow-flow one-way nozzle of the Aneros Prelude™ Enema Bulb Kit makes preparation easy and comfortable. When it comes to anal and prostate play confidence begins with a PRELUDE. Made from medical grade silicone.