Vionic mule slippers offers all-day support from the ground up. A biomechanical foot bed supports you and hugs your arches Like a natural footprint. Informational booklet is included and how to clean and care for them. Upper has an adjustable Velcro strap. So you can loosen or tighten them as you need. Do not machine wash. I wipe with a dry microfiber cloth (no water or solvents). They are great and they helped me tremendously in my house for support and stability but since my fall I replaced with their full back slipper.