Last year when we went on holiday I wore flip flops with no support or went barefoot for most of the day. Upshot was that by the end of the trip my plantar fasciitis was so bad I could barely put my foot on the ground when I woke up in the morning. (Admittedly I was also doing too much running.). Anyway, DH pointed out that lots of people seemed to have footwear that had arch support but was made out of rubber / plastic so didn’t matter if got full of sand or splashed at the pool of whatever. No idea what brand they were. Any recommendations from mumsnetters?