This is a life saver. Before, I coudn't move, use the phone, nothing! I had to sit there holding the bottles for 20 minutes. I don't know how I survived for two months without it. Now while pumping I use the pc, change channels,interact with my baby, etc. I use it with the Medela pump in style. FYI: I wear a 38DD and the s/m fits well. don't get the large unless absolutely necessary. You don't want this to be loose on you.