EverFoams Women's Ballerina Slippers Lightweight Comfy Memory Foam House Shoes with Stretchable Heel Design

Are these made in the u.k.

I am a 6.5 to 7 which one do i buy?

Are these washable ?

Everfoams ladies' satin lightweight ballerina slippers: i normally wear a uk wide size 7 eee shoe/slipper would you advise i buy the 7/8?