From Fran R:
Hope the pictures tell the story. I chose a small mirror but obviously they come in larger sizes - just a matter of personal choice.
The first 2 pictures just show front and rear views - the last 2 show where the bungee type cord in the handlebars has been disconnected but you can still pull the grips out and fold them down. They could be secured better with a stretchy cord to the main steering stem if necessary.