This drainage bag is made of a silicone elastomer and comes in three different sizes. It is clear and easy to identify and measure. Its silicone walls provide easy activation of suction, which allows for a low vacuum aspiration level. These bags are optimal for neurosurgery, plastic surgery, facial and neck surgery, masectomies, and gynecological surgery. They are also available in a closed drainage version. They are made free of latex and have an internal anti-reflix valve the prevents backflow of fluid to the patient. Its conical port makes it easy to connect to silicone wound drains.