OmnoStar Manual Breast Pump- 6001 has a maximum of 350 mmHg suction strength to promote quick pumping. It remains gentle too as the level of suction can be adjusted easily by hands.Completely safe as there is no BPA. The pump body (with an easy-express handle) and the reservoir both are made of PP. Express milk directly into the bottle to save it hygienically. Spares and Silicone cup should not be washed or cleaned with hot/lukewarm water.The attached silicone cup comfortably conforms to the breast and easy to position. It also helps in stimulating milk flow with textured massage with pumping.The pump designed to offer you a natural breast pumping experience. Depending on what suction level works best for you, you can control it by your hand.