Instructions!!
After reading a lot of reviews saying they don't fit I was skeptical....but, they aren't meant to fit perfectly. I think ppl are forgetting they are suction cups. WHEN YOU PUT THEM OVER YOUR EARS PRESS LIGHTLY UNTIL YOU CREATE A SUCTION.  Once they were suctioned onto my ears they blocked out dryer noise and heat. They stayed on until I released the suction. I like them. I would have given a 5 star but apparently they need instructions, it would help.
Rating: 4 stars