I think it was my solution for my creuvasses. Worn night and day my breasts could breathe while being protected. by cons attention, it is better to put the shells without holes during feedings especially if you want receuillir milk at the same time (at least 40ml!) (if milk flow is reversed and everything !!) and I admit I forgot 2 3 times to empty the blow when it stoops not forgive, everything flows by the hole!