17oz Outdoor Lager Cups 4-Pack: B Cups LAGER cups are made from a dishwasher safe, lightweight, rigid, shatterproof, fully transparent, BPA-free plastic. The shape of the cup evokes tradition with its straight walls, and also has plenty of room for head! We love our lager specific glassware and drinking beer from a proper glass is important to us. So in situations where glass just wouldn't do, we were sick about having to drink beer from a red party cup. Rather than complain about it, we decided to do something about it!