It helps to ease the swelling but also helps to get any fluids out that they put in whilst putting the implants in. U have a small incision about an inch around from the implant incision its smaller than a cm the tube in it actually goes nearly all round the implant inside ur boob. U can feel it bubbling and stinging a little bit when they remove them but its not going to take long for them to be removed.. Not every surgon uses them its personal preference of the surgon.