The Graham Field 3953-1 Penrose drain is a soft, flexible tube used to promote drainage in a surgical wound. It is made from high-quality amber latex with a smooth interior and exterior to minimize tissue trauma during insertion and removal. The 1-inch diameter provides a large surface area for capillary action, effectively drawing fluids away from the surgical site to prevent buildup. Each box contains 25 drains, typically 12 inches in length, which can be easily trimmed to the specific size required for the procedure.