Medline Disposable Cold Plastic Drinking Cups are translucent and come in several sizes: 3.5 oz., 5 oz., 7 oz., and 10 oz. capacity. Being translucent allows caregivers to easily monitor a patient's medication and cold liquids. The plastic used in the construction of these cups is a heavier gauge, thermal-formed polystyrene to provide strength to the cups. Also, these cups are latex-free, which reduces risk of triggering an allergic reaction in users. Easily Monitor Liquids and Medication. Heavier Gauge Plastic for Stronger Cup. Plastic Material Reduces Risk of Allergic Reaction.