Our unique convenient liners and silicone pods gently contract to promote air-free feeding and a more natural breathing and feeding rhythm. They are perfect for breastfed and bottle-fed babies alike. The gift set is the ultimate registry gift since it provides everything you'll need to meet your baby's growing needs including -4 bottles with silicone nipples two 4 ounce and 2 8oz, -40 disposable liners, -2 Binky® Pacifiers -2 reusable silicone pods, -2 breast pump adapters. The Nurser system can be used with either convenient disposable liners or reusable silicone pods. The liners offer a guaranteed clean bottle every time and on the go convenience. The pods are ideal for breastfeeding as you can Pump, Store, Warm and Feed with only 1 pod. No milk transfer needed. No mess. No waste. These silicone pods are leakproof, BPA-free and warm faster than standard bottles. To use, pump breast milk directly into the pod, store milk in the refrigerator or freezer until ready to use, warm milk in warm water or a bottle warmer and insert the pod into your Nurser bottle to feed. CLOSER TO NATURAL BREASTFEEDING - Our unique liners & soft silicone pods gently contract like Mom's breast as baby feeds to promote air-free feeding and help reduce gas, spit-ups, colic and fussiness 1 POD DOES IT ALL - With our silicone pods, you can pump, store, warm and feed with only one pod, no milk transfer needed. No Mess. No Waste. FASTER WARMING - Liners and Silicone pods warm up faster than regular bottles which helps to preserve milk nutrients.  GUARANTEED CLEAN - Pre-sterilized liners guarantee your bottle is clean every time.  Convenient, recyclable Drop-Ins® Liners  minimize cleaning time so you can spend more time with baby.