SantiroMens Walking Shoes Breathable Knit Slip On Sneakers Lightweight Athletic Gym Shoes

Are these machine washable? Especially the white onesz

I wear a us 10. as this is a tight fit with no laces should i order a 9.5 since the shoes stretches or a 10 ?

Does the sole of the shoe feel like cheap foam or is it heavy rubber?

I wear 9.5 should i get 10??