The Evenflo Dual Electric Breast Pump is small, handheld, portable, convenient and diaper-bag ready. The pump has a state of the art valve that provides consistent suction for more comfortable and efficient milk expression. Evenflo pumps have a flange size of 28.5 mm and also come with a soft silicone reducing insert to 24.5 mm if a smaller size is needed. The sleek design feels good to moms and allows for discreet pumping. The Evenflo Dual Electric Breast Pump comes with a 5 ounce bottle size to allow for more milk collection. All components are made without BPA.