These Playtex Drop In Bottles and Liners are a must-have for any parent looking for a convenient feeding solution. The bottles and liners are brand new and have never been used. They are designed to make bottle feeding easier and more comfortable for both baby and parent. The bottles come with liners that collapse as the baby drinks, reducing air intake and preventing colic. They are perfect for on-the-go feeding and can be easily disposed of after use. The Playtex brand is a trusted name in baby products, so you can trust that these bottles and liners will meet your needs. See pictures. Unsure if the liners are meant for these ones or if it’s just the drop ins that work.