The 16 oz. Comet Colors Party Cool Blue Plastic Cup, sold 500 per case, is a fun way to serve all the cold beverages at your next party. This translucent blue cup is made from polypropylene, which is a highly durable plastic material. It can be a fantastic alternative to using real glassware because of their durability, but also for their disposability. The rolled edge will be comfortable for your guests to sip from, and the etched wave design adds a decorative touch.