I washed these per instructions - gentle cycle, even air dried them/laying flat, and they started to fray at the seams after the first washing.  If I'd washed with normal cycle I'm pretty sure they'd have fallen apart.  You get what you pay for with these.  For our household it's fine because these are a temporary solution for privacy for a room while custom window treatments are made, but they will not be reused with how poorly constructed they are.  They are also not attractive curtains - the pattern isn't very visible on the web photos but it looks very much like a cheap shower curtain is hanging in my windows.  The sheen is not subtle.  Again, temp solution but I had still hoped to reuse these in another room.