Ameda Evenflo Purely Yours Ultra Breast Pump comes with custom fit flanges and built-in bottle holders. It uses the hygienikit milk collection system, which is a closed system that features a patented diaphragm, which prevents milk and moisture from entering into the pumps tubing. This saves clean up time since the tubes do not require washing after each use. It is made without BPA, is dishwasher safe and can even convert to a manual pump. It also safeguards the purity of expressed milk from bacteria and viruses by keeping milk and outside air separate from each other.