We have one of those useless. Half the time it is fogged up, the rest of the time its wrinkled flexible window reflects so badly you cannot see the screen so still keep stopping to take it out to check the route. I suppose it is more accesible than a pocket though.I was looking in Lidl this week and they had a cycle case that strapped to cross bar and it had a pocket with clear plastic phone holder. Looked pretty good but it's not on their website for some reason.