I have just come back from a 10 mile ride in the rain without my rearview mirror (I've just had a new throttle fitted and forgot to put the mirror back on ) and it has made me realise just how much the mirror adds to my enjoyment and peace of mind. Its the first time I've ridden without one and I won't be doing it again. To get to the local cycle paths I have to use a busy main road, problem is the traffic isn't constant but when cars come along they fly past . You would think it would be easy to hear them but in the wind and rain its not and I was constantly looking over my shoulder to check. With the mirror its a dawdle, angle it correctly and checking the rear view requires no effort whatsoever and becomes second nature . The reason I'm posting this is that if my Wisper hadn't come with a mirror (it was bought 2nd hand and has been one of my best buys ever) I would possibly not have discovered how much better the riding experience is when you have one so if there's anyone out there who hasn't thought of getting a mirror fitted believe me, its well worth the effort. There's at least one thread on here which will give you onfo on the best mirror to get