I also love our glass smoothie straws! They are wide so that the thick smoothie can travel through the straw. I chose to get glass dots on ours (they are four different colors) so that they wouldn't roll off of surfaces and so that we would know whose was whose drink. I think they are loads better than disposable ones and they are attractive too. They even came with a little brush to clean them with.
Anyone have great smoothie recipes to share?