All accessories are made of food grade Silicone and PP ,They are BPA Free, Which is very safe for babies. Petal massage pillow, Non-toxic, tasteless and odorless...Simulating real breast pumping, Comfortable and painless...food grade silicone, BPA Free. 100% safe material. Two adjustable suction levels, mothers can choose the suitable one. Anti-reflux system and non-return valve ensure that breast milk flows into the feeding bottle and avoid secondary breast milk being pulled out to keep it clean. The accessories of this manual breast pump are detachable and washable, so it is very easy to clean. Put the massage cushion cover on the bell-bottom merchant, fit it well, then you can use it. Pay attention to keep your chest close to the massage cushion to ensure no gap.