I'm finishing up 2 hats for 2 girls 5 Little Monsters: Crocheted Unicorn Hat with Flowers 5 Little Monsters: About Me

My neighbor wanted to know about washing instructions if it had to be washed by hand. I didn't think so but I looked at one of the yarn labels which said it could be washed in the wash machine but with the decorative stuff on it I'm guessing it probably should be washed by hand. What do you think?

The 2 hats for the 2 boys is with a 4 ply yarn (regular yarn thickness for 4 ply) The hats for the boys have a face on them and a small hat on top of the hat (like SpongeBob would wear) and I would go ahead and say the hats for the boys could go in the wash machine. Do you agree?