CLPP'LIWomens Slip on Faux Fur Warm Winter Mules Fluffy Suede Comfy Slippers

im a size 8 (US), should i order a size 9 or 10? i don't want the heel of my foot sitting on the back edge of the slipper.

Will these fit wide feet?

Is it real sedue?

Do these have arch support? Thank you.