Works with express and go pre-sterilised pouches. Pouch clicks securely into place with a breast milk pouch bottle, so no need to transfer milk to a bottle. Comes complete with a unique, breast-like shaped teat for easy-latch. Super-sensitive, easi-vent valve eliminates excessive air flow. Dishwasher safe / bpa-free / phthalate-free / pvc-free. Imported from UK.