Nenesupply Ice Packs and bottles SEAMLESS TRANSITION FROM BREAST TO BOTTLE. Breast-Like nipple shape encourages a proper latch for a more natural bottle feeding experience. MADE OF ULTRA SOFT SILICONE that feels like mom. Eases transition from breast to bottle and back again. Suitable for breastfed babies. Breastfeeding bottles. ANTI-COLIC VENTED BOTTLE. Efficiently balances air inside and outside. Advanced venting system reduces air intake. Minimize colic, gas, and fussiness. Nipples don't collapse while feeding. COLLECT, STORE, and FEED WITH SAME BOTTLE. COMPATIBLE BREASTPUMPS - SPECTRA S2, SPECTRA S1, SPECTRA 9 PLUS, SYNERGY GOLD and MOTIF LUNA Breastpumps. Replace Spectra Bottles for Pumping. Bottles are compatible with Spectra flange and Spectra Pump Parts. No transfers, less parts to wash. EASY TO USE. Bottles can be used with most bottle warmers, and breastmilk cooker bags (See bottle diameter in the product photo.) Volume marking is easy to read and lead free. The ergonomic shape is easy for baby to grab onto while feeding. The bottle have sturdy base so they do not tip over. 0m+ NIPPLES (XS) INCLUDED. The slowest flow for your NEWBORN BABY. 4 faster flows are available and can be bought separately. XS(0 m+), S(1 m+), M(3 m+), L(6 m+), XL(9 m+). Care for every stage of your baby's development. MATERIAL: PP and SILICONE. ALL PARTS ARE FOOD-GRADE SAFELY TESTED. BPA FREE. Can be used within temperature of -20~100C. DISHWASHER SAFE, and can be sanitized with water steam or boiling water. Comply with FDA regulations for food contacts. Nenesupply Ice Packs and bottles