This is my daughter told me, I liked the idea for the upcoming vacances..C'est true, when the galley is at the beach and you have to change every 2 or 3 hours ... and ... pppfffttt miracle .... 1/2 quiet day. And yet I could expect. Easy to use from the 1st, the explanation is easy to apply. You do not feel anything, you forget it lol so beware !!!! I'll order a 2nd :)