Well not this summer as I'm still in my boots but in a normal summer I'd be mostly wearing birkenstock type sandals from May onwards. However, last summer I started noticing that the tendons in my arches and top of my feet start aching after a while. Now a friend of mine who's from New Zealand told me that her mum and aunt both have arthritis in the balls of their feet after many years of wearing this type of sandal. Does anyone else find their feet get sore after a day walking around in this type of sandal and anyone developed longer term foot problems?