If you prefer a bottle that mimics breastfeeding, choose, Playtex - drop-ins, Clinically proven to reduce colic better than other regularly used bottles, Infants fed with Playtex drop-ins bottles used the same natural suck-swallow-breathe rhythm used
Easy to use, Playtex Drop-Ins Liners provide your baby with a safe, comfortable way to enjoy bottle-feeding. The disposable liner collapses as your child drinks, providing air-free feeding and greatly reducing gas and messy spit-ups. Each liner fits conveniently within a bottle, so you can prepare a meal quickly. Drop-Ins Liners are BPA-free and clinically shown to mimic natural breastfeeding, so babies feel secure as they eat.With the Twist 'n' Click feature, the lid click closes with a simple twist and the cup becomes 100% leak-proof. It's also well insulated to keep drinks cool and fresh for longer periods.
Playtex Drop-Ins Pre-Sterilized Soft Bottle Liners 8-10 oz. 100 ea (Pack of 3) - B00LXGY83K