The clean, clear polystyrene plastic allows these jars to display your product with crystaline clarity. This 16 fl oz clear poly styrene PS round Single Wall Jar features an 89-400 neck finish and is straight sided. It also has a straight base, which in packaging terminology describes the sharp angle between the side wall and the base of the jar. These jars are ideal for Medical, Cosmetic, Pharmaceutical, Automotive, Janitorial, Fine Arts, Craft and Hobby, Confectionery, and Candy and Snack Industries.