These parts are after-market parts made by Maymom,

BPA, DEHP FREE ; US FDA registered medical device (No. D192499); Products are inspected by US FDA. Complies with US FDA and EU standards for containers that contact food. CLEANING: No problem in dishwasher toprack and steamer. 100% LEAK PROOF as the sealing disk soft enough to achieve better sealing. Re-writable sealing top also features easy labeling date or name in daycare center; write with a regular ball pen, clean with soapy water and rinse. COMPATIBLE AND INTERCHANGEABLE with Lansino nipple, Lansino bottle cap, Lansino bottle top, Lansino bottle lid, Lansino collar, Lansino sealing disk. Not Original Lansino pump parts of Lansino Signature Pro Breastpump /Smartpump/ Manual Breastpump. CONTENTS: 4x Bottle Dome Cap, 4x Bottle Top, 4x Rewritable Sealing Disk; ONLY compatible with Lansino Wide-Mouth bottles, Pigeon Wide-Mouth bottles, Lansino Momma breastfeeding bottles.

Number of Items: 1. Included Components: Bottle Dome. Special Feature: Dehp Free. Operation Mode: Manual. Brand: Maymom. Best Sellers Rank: #8,304 in Baby. Customer Reviews: 4.6 4.6 out of 5 stars 512 ratings 4.6 out of 5 stars. : B084YSD55H. Item Weight: ?3.98 ounces. Dishwasher safe: ?Yes. Batteries required: ?No. Pump type: ?Manual. Style: ?Manual. Number Of Items: ?1. Additional product features: ?Dehp Free. Item model number: ?L016. Package Dimensions: ?8.07 x 3.74 x 2.56 inches.