Hi, I've just come back from 4 nights away in this country at the sea, in my camper van. I have worn sandals for the first time this year and within 2 days my feet were cracked and bleeding. No particular hard skin. Very sore to walk on. I am type 2 but take insulin. I will buy some flexitol, but would like to know what causes this. Thanks in advance. PS the avatar makes me look like a man, but \\i am a woman. 