I used it for the first 12 hours of my labour, i started myself and most of my pain was in my back so it really helped. My midwife said it really is only of any use if this is where your pains are, if you are having most of your pain in the front its not much cop. I was having contractions every 4 minutes for the first 12 hours so it really was a huge help and i hadnt considered it or used it at the very begining like they suggest, i didnt get it until i got into hospital.