*Make sure to check out the Variant Pictures!* WORKS WITH Lansinoh nipples, bottle caps, bottle tops, bottle lids, collars, and sealing disks – all conveniently interchangeable. Not the original parts for Lansinoh Signature Pro Breastpump /Smartpump/ Manual Breastpump, but still 100% LEAK PROOF with a super soft sealing disk. Plus, you can easily label with a ball pen and even use in the dishwasher and steamer. And of course, it's BPA and DEHP FREE! We're registered with the US FDA as a medical device (No. D192499) and inspected by them too. Meets both US FDA and EU food container standards.