Minor Cons : - slightly time-consuming to wash multiple piece . - bottle always leak for I , I personally have to use another brand for feeding -lrb- Tommee Tippee be exceptional for combine breast and bottle -rrb- . - the bottle-pump be top-heavy and fall over if you be not careful , and can leak a little when on they side . - a little milk get under the ` petal ' and can occasionally be slightly messy . pro : - Super comfortable !!!! - Super fast ! - Super suction -lrb- but you 'll hardly feel it -rrb- ! easily compare to the hospital grade pump I use , but without the discomfort . - infinite personalized variety in speed , rhythm , and suction intensity . I can change the variable as often as I want throughout the pump session so that it remain comfortable and can be match to the change of my flow . - double my output in half the time over my manual pump . - the \* only \* pump I would ever want to use multiple time daily . it be just so entirely comfortable and fast . the other pump -lrb- even the hospital one -rrb- make I slightly sore and make pump a burden , especially the more frequently I use they . - one reviewer say it do not work with very large nipple . I have find this to be untrue , you just have to be more careful with the placement and wet you breast first with a little milk to make it easier for they to slide into the funnel . but it do work .