From the seller

manual feeding bottle pump is a hand-operated breast pump designed to express breast milk comfortably and efficiently. It includes a soft silicone breast shield, an ergonomic handle for easy pumping, and a BPA-free feeding bottle that collects the expressed milk directly for storage or feeding. Lightweight, portable, and easy to assemble, it is ideal for occasional pumping at home or while traveling. Most models are easy to clean and allow mothers to control the suction pressure for a comfortable pumping experience.