Pack light is the most important for a backpacker. When I choose material, I am very picky about the weight.
You must have a pair of sandals and I like Crocs for traveling. It’s light and quick dry . So it’s good when I take shower at hostel or the basic accommodation where I have to use communal bath and when I walk around the beach and so on. It’s good for relaxing feet after a long hike at the camp or tea houses ( Nepal ).
I have this style.Cleo
It’s get almost flat and easy to carry. However I have bunions so this style is not good for walking around on rough surface like a gravel road and a bad street like in Nepal or India. It has good cushion so even though I do not use for a long walk, it’s better than others for me.
I saw some climbers at the Everest base camp ( Nepal side ), where is on the glacier and there are lots of stones, wearing Crocs Regular Style . It comfortably covers your feet.