These plastic flasks are 100% Recyclable and Reusable. These Plastic Flasks holds 5 fluid oz. Flasks have No Metal - No Glass - No Hassle. Flasks come with a pouring funnel for easy pouring of liquid into flask. Flask are about the same size as a cell phone. Flask has image of a red and black skull on it in the center with red & black skulls in all 4 corners.