Out of nowhere I've got blisters on the bottom of both big toes. Been on the bike most days for the last fortnight but I don't think it's cycling that's the cause. Could it be walking in my hard soled cycling shoes that's to blame ? I don't use clips, cleats etc , I just wear Specialized cadet shoes . The few days I work usually involve some walking in between the cycling to the houses. Anyone have any experience of this or tips to help. I might have to consider taking a change of shoes to work , but that means I have to take a pannier bag all the time.