You know it's not a good idea to use your best glasses outside. It's bound to end in tears (or broken glass at least). But you certainly don't want to use ugly throwaway plastic or paper cups. So, a dilemma. These melamine goblets are the answer, with the elegance of glass, but strong enough to survive the great outdoors. Light and durable, easy to handle and wash. Recommended hand wash for long use. Plastic. 0.62 litre capacity.