won't substitute for a sock bun...
firm plastic, easy to use.  doesn't work for overnight, for me.  i have straight, medium length hair. had it in all day, and it didnt feel like it slipped at all. was trying to create waves for the next day, so plan was to weaer all day and night, take out in morning, and voila, have sock bun wavy hair... only as soon as i put my head down to lay me down to sleep, it popped open.  guess it didnt serve it's purpose for me.  it was super easy to put my hair into a bun w it, much easier than using a sock, so this will be my daytime bun creator.  havent used it to do any of the other hairstyles shown on the insert... but it's hard to see what the picture is really showing, and the instructions are not in english.  guess i'll have to find time to figure it out.
Rating: 4 stars