Silicone walls to provide easy activation of suction. Internal anti-reflux valve to help prevent backflow of fluid to the patient. Clear reservoir and graduations that make it easy to identify and measure exudate. Not made with natural rubber latex. 100cc bulb that features a threaded outlet port which connects directly to either a Luer lock syringe for collection of a culture sample or to an exudate disposal bag to provide a closed system for safe disposal of exudate. 400cc bulb that features dual-inlet ports to allow connection of two drains without a y-connector. 400cc bulb with a threaded outlet port that connects directly to an exudate disposal bag for safe disposal of exudate.