POKARLA 40L Foldable Rucksack Travel Hiking Folding Outdoor Backpack

When folded does it have a belt loop for carrying on belt when not in use

Hi, hoping someone can help me figure this out please. Do you think this rucksack can fit a standard sized pillow and still have space in it?

Is this suitable for disabled? I use a walker

Are the teeth of the zipper plastic or metal, please?