These 3 x 5 Zipper Locking Biohazard Bags with a post-applied zipper are pre-printed in black and red ink with the universal symbol "Biohazard" to label potential medical hazardous contents and provide a great zip locking seal against contamination or compromising the bag contents. Used in hospitals and labs, these 3 x 5 .002 mil special printed biohazard zip locking bags protect contents and health care workers. These small 3in. x 5in. biohazardous waste bags are clear and do not have a separate document pouch in the back, nor do they have a "Tear-off Top" feature like some of our other bags.