Playtex 4-oz Drop-Ins Disposable Bottle Liners are pre-sterilized and guaranteed to be the strongest you can buy! Drop-Ins pre-formed shape allows for one-hand holder assembly, making it quick and simple to prepare a bottle even while holding baby! Liners collapse as baby feeds ...Playtex 4-oz Drop-Ins Disposable Bottle Liners are pre-sterilized and guaranteed to be the strongest you can buy! Drop-Ins pre-formed shape allows for one-hand holder assembly, making it quick and simple to prepare a bottle even while holding baby! Liners collapse as baby feeds, so no air gets into the milk. This Playtex Drop-Ins Liners system has been clinically shown to help reduce gas, colic, spitting up and support baby's natural feeding rhythm. The Playtex 4-oz Drop-Ins Disposable Bottle Liners has been shown similar to the natural sucking, swallowing and breathing patterns of breastfeeding.
When feeding time is through, simply dispose of the liner - no clean-up necessary!